Answer:
Word: withhold.
Synonym: retain.
Sentence:
The FBI withheld the data requested by the prosecutor; as a result, it retained the material and refused to provide further information.
Withhold means to refuse to give something that is due or requested. Similarly, its synonym retain signifies to keep possession of something.
C: transport
because its suitable if you read it. if you read using all the answers, the most suitable answers is TRANSPORT