Question

the main goal of chinas first five-year plan under mao zedong was to
seize land and businesses.
start a cultural revolution.
spur economic growth.
launch collectivization.

Explanation:

China's first Five-Year Plan (1953-1957) focused on rapid industrialization and building up key economic sectors to develop the nation's economy. Seizing land/businesses was part of earlier land reform, the Cultural Revolution was a later movement, and collectivization was a related but secondary component to the core economic growth goal.

Answer:

spur economic growth.