Which word is the predicate adjective in this sentence?

The reconditioned snowboard was sleek and had blue stripes on it.

a. blue

b. it

c. stripes

d. sleek

A predicate adjective is the first adjective that follows a linking verb which connects two parts of a sentence (in this case, that verb is 'was'). So, the first adjective after was is 'sleek', so D is the correct answer.