Which group of words in this sentence is an independent clause?

i ate dinner after i completed my homework, even though it was quite late.

a. i ate dinner

b. after i completed my homework

c. although it was quite late

d. my homework

e. was quite late

Salutations!

Which group of words in this sentence is an independent clause? 

Independent clause are clause that stand up alone, without containing any conjunctions. It is mere a simple sentence.

The following are sentences that are independent clauses:

→ I ate dinner.

→ My homework.

→ Was quite late.

Thus, your answers are option A, D and, E.

Hope I helped :D