Question

which sentence is written correctly?

as an enthusiastic reader, sanjay often visits the library to check out new books.
as an enthusiastic reader-sanjay often visits the library to check out new books.
(as an enthusiastic reader) sanjay often visits the library to check out new books.
as an enthusiastic reader sanjay often visits the library to check out new books.

Explanation:

Analyze the sentence structure

The sentence begins with an introductory prepositional phrase: "As an enthusiastic reader". This phrase functions as an adverbial modifier describing Sanjay.

Evaluate punctuation rules

An introductory phrase that is long or sets the stage for the main clause should be separated from the independent clause by a comma.

Compare the options

• Option 1 uses a comma after the introductory phrase, which is grammatically correct.
• Option 2 uses an em-dash, which is incorrect because the introductory phrase is not a parenthetical interruption or emphasis requiring a dash.
• Option 3 uses parentheses, which is incorrect because the introductory phrase is a natural modifier, not a non-essential aside.
• Option 4 uses no punctuation, which creates a run-on feel and fails to separate the introductory modifier from the subject.

Answer:

• (A) As an enthusiastic reader, Sanjay often visits the library to check out new books. (Correct answer)
• (B) As an enthusiastic reader—Sanjay often visits the library to check out new books.
• (C) (As an enthusiastic reader) Sanjay often visits the library to check out new books.
• (D) As an enthusiastic reader Sanjay often visits the library to check out new books.