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:

A participial phrase ("As an enthusiastic reader") that introduces the subject (Sanjay) must be set off with a comma when it comes before the main clause. The first option correctly uses this comma. The second option misuses an em dash, the third incorrectly uses parentheses for a non-parenthetical phrase, and the fourth omits the necessary comma, creating a run-on introductory phrase.

Answer:

A. As an enthusiastic reader, Sanjay often visits the library to check out new books.