Question

chinas economic expansion after the cultural revolution is a result of
new capitalist reforms.
new political reforms.
new trade reforms.
new socialist reforms.

Explanation:

After the Cultural - Revolution, China's economic expansion was mainly due to the implementation of new socialist reforms, especially the reform and opening - up policy. This policy aimed to develop the socialist economy by introducing market - oriented elements while maintaining the socialist system. It was not new capitalist reforms as China adhered to socialism. Political and trade reforms were part of the overall socialist reform package, but the overarching concept was new socialist reforms.

Answer:

new socialist reforms.