The value of the next best alternative given up is called ?

I believe the correct answer is "opportunity cost".

Explanation:

The opportunity cost of a choice is the value of the best alternative given up. Scarcity is the condition of not being able to have all of the goods and services one wants.

Medicaid expansion

Explanation:As of August 2016, more than 10.5 million Medicare beneficiaries had saved $20.8 billion on prescription drugs, an average of $1,945 per beneficiary, since the ACA was enacted in 2010, according to the Centers for Medicare & Medicaid Services (CMS) (source).