What are the type of tense

What is the primary theme of ha jin’s “a decade”?

Why was west berlin in rubble "four decades ago"? a.that part of germany had been bombed during world war ii. b. reagan misspoke, as berlin was not in rubble 40 years ago. c. west berlin's highways were under construction.

Roxy g.b biv" stands for the colors of the rainbow : red,orange, yellow, green, blue, indigo and violet it's an example of a