Answer:
D. Parenthetical or A. Informational
Explanation:
A nonrestrictive clause (also known as a nonessential clause) is a type of adjective clause that provides additional information about a word whose meaning is already clear. A nonrestrictive clause often begins with the word which and are always set off with commas.
P.S (its either A or D either one is right but D makes the most sense) Hope this helps you :)
