Question

reagan based his reelection campaign in 1984 on
getting people to vote early.
his supreme court appointments.
a booming economy.
the resolution of the patco strike.

Explanation:

Ronald Reagan's 1984 reelection campaign centered heavily on the strong economic growth and prosperity (a booming economy) during his first term, which was a key selling point to voters. The other options were not the core focus of his reelection strategy.

Answer:

a booming economy.