FACTS in this scenario in which to base your inference.

Most of my friends = (X)

used 7sage to study for the LSAT =(Y)

2nd Fact

All Y are Z = Each 7sage user scores perfectly on the LSAT.

Correct Inference=

Thus, most of my friends scored perfectly on the LSAT

The brain is the most important muscle, keep massaging it young padawans. GL to all of us, bless you all!