Of what type of informal amendment are the following examples?

-Selection of cabinet members

-Succession of vice president to office of president after the death

of a president who currently holds the office

-Limiting presidential terms

ASupreme Court decisions
Bcustom
Cpresidential actions
Dpolitical party activities

Verified Answer :

The correct answer to this question is:

 B. custom

-It has the power to select the members of the
cabinet.
-It also
can amend succession of vice president to office of president after the death 

of a
president who currently holds the office.

-It has
also capable of limiting a presidential term which is stipulated to be two.

Answer:

B. custom

Explanation:

A succession of a vice president to office is not for anyone to decide. It is a custom that is put in practice if something happens to the president. With that in mind, we can infer that the others are also a custom, since they're also not meant to be defined by the supreme court, party, or president's actions.