Giving this to a witness means that he or she is free from the threat of prosecution.

perjury

subpoena

contempt

immunity


Congressional committees may punish people who refuse to testify by

holding them in contempt.

issuing a subpoena.

arresting them for perjury.

giving them immunity.


Through this power, Congress can check on how the executive branch is administering the law.

immunity

legislative oversight

perjury

subpoena

Verified Answer :

1) Giving this to a witness means that he or she is free from the threat of prosecution is prejury
2)
Congressional committees may punish people who refuse to testify by holding them in contempt.
3) 
Through this power, Congress can check on how the executive branch is administering 
legislative oversight