Answer:
D: Whenever we choose to leave for the game is fine with them.
This sentence contains a noun clause
Explanation:
A noun clause is the dependent clause that acts a as a noun in the sentence. It usually begins with the words, how, whenever, whichever, when, where, who, whom, why, whether. They can either act as subject or object (direct or indirect) of the sentence. They may also act as objects of preposition.
Option D has the noun clause āWhenever we choose to leave for the gameā. It is acting as a subject of the sentence here. The āverbā in the sentence is āchooseā. Ā