Economic activity will go through an expansion phase when: A) The government budget has a surplus. B) The balance of trade has a deficit. C) The balance of trade has a surplus. D) Total leakages are greater than total injections. Economic activity will go through an expansion phase when: A) The government budget has a surplus. B) The balance of trade has a deficit. C) The balance of trade has a surplus. D) Total leakages are greater than total injections