Since the 1980s, the Supreme Court has applied the exclusionary rule mainly to promote the interest in:

a) individual rights.

b) deterring illegal government conduct.

c) judicial integrity.

d) promoting equal justice for all citizens.

The exclusionary rule says that evidence collected illegally, especially when the defendant's rights have been violated, cannot be used in the process of prosecution

This is mainly used to promote b) deterring illegal government conduct.