Which additional word in the sentence should be capitalized?

I asked dad for the answer to that riddle about the elephant and the peanut.

A.
Riddle

B.
Peanut

C.
Elephant

D.
Dad

Which additional word in the sentence should be capitalized?

The current version of the canadian flag was adopted by the country in 1965.

A.
Version

B.
Flag

C.
Canadian

D.
Country