There is no passage and answer choices, so it is impossible to answer this question. I apologise.
Answer:
obstacle, groups, examples, life
Explanation:
You may be being asked to drag or paste specific words in, but these words fit as well.
Hope this helps.
The correct option is C.
"Uncle Don" is the subject.
"is wearing" is the predicate.
"suit" is the direct object.
"to the party" is the prepositional phrase.