Which statement accurately describes and item in the federal budget?

A. Medicare is a discretionary expense.

B. The national debt interest is a discretionary expense.

C. Highway spending is a mandatory expense.

D. Social Security is a mandatory expense.

In what ways did electricity positively impact society? (select all that apply.) 1. more control over lighting at home and work 2. availability of more electrical appliances 3. elimination of agricultural slave labor 4. ability to run a car for longer periods of time