GMAT Critical Reasoning (CR) | Re: Egidio's Gym has been in operation for seven years, and offers regular

ok, the conclusion is that gym membership has risen significantly due its superior facilities.

we need to focus on finding an assumption that tells us removes any gap between the premises and the conclusion, or defends the conclusion from breaking down. we cannot target a part of the conclusion that the gym member ship did not rise at all in the first place, because that is not the complete conclusion; the conclusion is whether the gym membership rose DUE to superior facilities.

Can you please