Question

does this sentence have correct comma usage? select the best answer.

the study, based on the work of angus macbrein was funded by a national science foundation grant.

answer

yes, this sentence has correct comma usage.
no, this sentence has incorrect comma usage.

Explanation:

🆕 New Concept Discovered: Nonessential Appositives and Parenthetical Phrases
Setting off extra information with matching commas.

Step 1: Identify the parenthetical/nonessential phrase

In the sentence:
"The study, based on the work of Angus MacBrein was funded by a National Science Foundation grant."

The phrase "based on the work of Angus MacBrein" is a nonessential (or parenthetical) phrase. It adds extra detail about the study but is not required for the sentence to make grammatical sense.

Step 2: Check the punctuation rules for nonessential phrases

When a nonessential phrase is inserted into the middle of a sentence, it must be set off with a pair of commas—one at the beginning of the phrase and one at the end.

• Beginning comma: Present before "based" (..., based on...)
• Ending comma: Missing after "MacBrein" (...MacBrein was...)

Because the closing comma is missing before the verb "was," the sentence has incorrect comma usage. It should be:
"The study, based on the work of Angus MacBrein, was funded by a National Science Foundation grant."

Answer:

No, this sentence has incorrect comma usage.