Which word in the sentence is the predicate adjective?
the skin on a granny smith apple is green.
a. apple
b. granny
c. skin
d. green

The correct answer is D. Green. This is because it is the only word that is the part of a predicate. The other words are all part of the subject noun phrase "the skin on a granny smith apple". "Is" is the predicate in combination with "green"

That he won't be able to get a good job without a nose