Question

Which sentence contains a correctly punctuated parenthetical phrase?

Dr. Jonas Salk, a medical researcher from New York, developed the first effective polio vaccine.

My brother, the brightest kid in the class wasn't paying attention.

The dentist prepared to extract, the decaying tooth my left rear molar.

She played my favorite piece Beethoven's "Fur Elise."

Answer 1

My brother, the brightest kid in the class wasn't paying attention.

Step-by-step explanation:

Answer 2

Dr. Jonas Salk, a medical researcher from New York, developed the first effective polio vaccine

Step-by-step explanation:

In rhetoric, a parenthesis or parenthetical phrase is an explanatory or qualifying word, clause, or sentence inserted into a passage. The parenthesis could be left out and still form grammatically correct text. Parentheses are usually marked off by round or square brackets, dashes, or commas

So then

Dr. Jonas Salk, a medical researcher from New York, developed the first effective polio vaccine

Dr. Jonas Salk, developed the first effective polio vaccine

would both work.

And I took the the test.