Final answer:
A hold is a tactic used to inform the leadership that a senator may have objections to a bill. It allows senators to delay the consideration of a bill and have their concerns heard.
Step-by-step explanation:
The tactic used to inform the leadership that a senator may have objections to a bill is called a hold. A hold is a practice in the Senate where a senator informs the leadership that they have concerns about a bill and would like to delay its consideration. It is a way for senators to have their objections heard and potentially influence the outcome of the bill.