Final answer:
A) Bipartisanship is the political mechanism used to forge compromises on how best to reduce budget deficits.
Step-by-step explanation:
The political mechanism used to forge compromises on how best to reduce budget deficits is A) bipartisanship.
Bipartisanship refers to a process of cooperation through compromise between the two major political parties.
It involves legislators from both parties working together to find common ground and reach agreements.
An example of bipartisanship in action would be when Republicans and Democrats come together to pass a budget that includes spending cuts and revenue increases to reduce the budget deficit.