Question

independent practice
for numbers 1 - 5, choose the answer that best punctuates the underlined part of each sentence.
1
dr. jonas salk 1914 - 1995 discovered
a cure for polio.
a salk 1914 - 1995, discovered
b salk, (1914 - 1995), discovered
c salk (1914 - 1995) discovered
d salk—1914 - 1995—discovered
2
polio a disease that struck fear in
parents was a terrible illness that
could cripple children.
a polio, a disease that struck fear
in parents, was
b polio, a disease that struck fear
in parents—was
c polio (a disease that struck fear
in parents), was
d polio—a disease that struck fear
in parents, was
3
jonas salk’s parents immigrants with
little formal education themselves
were determined that their children
would succeed.
a parents—(immigrants with little
formal education themselves)
were
b parents immigrants with little
formal education themselves,
were
c parents immigrants with little
formal education themselves--
were
d parents (immigrants with little
formal education themselves)
were
answer form
1 ① ② ③ ④
2 ① ② ③ ④
3 ① ② ③ ④
4 ① ② ③ ④
5 ① ② ③ ④
number correct /5
4
at medical school, salk began
researching influenza the virus that
causes the flu.
a influenza the virus, that causes
the flu.
b influenza—the virus—that
causes the flu.
c influenza (the virus) that causes
the flu.
d influenza, the virus that causes
the flu.
5
salk’s discovery of a polio vaccine for
which he refused to accept money
won him the admiration of all
americans.
a vaccine, for which he refused to
accept money—won
b vaccine—for which he refused to
accept money—won
c vaccine—(for which he refused
to accept money) won
d vaccine for which he refused to
accept money, won

Explanation:

Question 1

To punctuate the sentence correctly, we need to set off the year range (1914 - 1995) as non - essential information about Dr. Jonas Salk. Parentheses are used to enclose such non - essential information. Option A has a comma but no proper enclosure of the year range. Option B has unnecessary commas inside the parentheses. Option D uses em - dashes which are not the appropriate punctuation for enclosing non - essential information here. Option C, "Salk (1914 - 1995) discovered", correctly encloses the year range in parentheses as non - essential information.

The phrase "a disease that struck fear in parents" is a non - essential appositive that describes "Polio". We can use commas, parentheses, or em - dashes to set off non - essential appositives. Option A uses commas which is correct for a non - essential appositive. Option B uses em - dashes which is also a valid way, but let's check the other options. Option C uses parentheses which is correct too, but let's see the original sentence structure. Wait, the original underlined part is "Polio a disease that struck fear in parents was". The correct way is to set off "a disease that struck fear in parents" from "Polio" and "was". Option A: "Polio, a disease that struck fear in parents, was" - the commas correctly set off the non - essential appositive. Option B: the em - dash is not the most appropriate here as commas are more common for this type of appositive. Option C: parentheses are a bit too formal here and the original sentence flow is better with commas. Option D: em - dashes are not the best choice here. So Option A is correct.

The phrase "immigrants with little formal education themselves" is a non - essential appositive describing "parents". We can use parentheses to enclose non - essential appositive information. Option A has incorrect use of em - dash and parentheses. Option B has no punctuation to set off the appositive. Option C has an incorrect em - dash. Option D: "parents (immigrants with little formal education themselves) were" correctly encloses the non - essential appositive in parentheses.

Answer:

C. Salk (1914 - 1995) discovered

Question 2