Question

in the following sentence, where should a comma be inserted after the introductory phrase or clause? select the best answer.

on the last page of the textbook marvin found the information he needed.

answer

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on the last page of the textbook marvin found the information he needed.

Explanation:

🆕 New Concept Discovered: Introductory Phrases and Commas
Setting off opening details from the main sentence

Step 1: Identify the main clause

The main clause of a sentence contains the primary subject and verb and can stand alone as a complete thought.

In this sentence, the main action is:
"Marvin found the information he needed."

• Subject: "Marvin"
• Verb: "found"

Step 2: Identify the introductory phrase

An introductory phrase comes before the main clause to provide background information, such as when, where, or how the action happened.

The words leading up to the main clause are:
"On the last page of the textbook"

This is a long prepositional phrase that tells us where Marvin found the information.

Step 3: Determine comma placement

When a sentence begins with a long introductory prepositional phrase (typically four or more words), a comma should be placed immediately after the phrase to separate it from the main clause. This helps the reader see where the introductory details end and the main sentence begins.

• Introductory phrase: "On the last page of the textbook"
• Main clause: "Marvin found the information he needed."

Placing the comma at the boundary gives:
"On the last page of the textbook, Marvin found the information he needed."

Looking at the selection triangles in the image:

• The first triangle is after "page"
• The second triangle is after "textbook"
• The third triangle is after "found"

The comma belongs after "textbook".

Answer:

The comma should be inserted after the word textbook.

Correct Sentence:
"On the last page of the textbook, Marvin found the information he needed."

(Select the second triangle located directly under the space between "textbook" and "Marvin".)