Question

president taft’s use of dollar diplomacy in nicaragua and china showed that american foreign policy:
should not encourage
american businesses to
invest in foreign projects.
should concentrate on
using american money in
all business deals.
needed to offer enough
money to support each
country’s military
could not focus only on
business and economics.

Explanation:

Dollar Diplomacy under Taft aimed to use economic investment for foreign policy goals, but experiences in Nicaragua and China showed that foreign policy couldn't solely focus on business/economics, as other factors (political, social) came into play. The other options are incorrect: the first contradicts Dollar Diplomacy’s intent to encourage business investment; the second overstates its focus on all business deals; the third misrepresents its goal (not military support).

Answer:

The option "could not focus only on business and economics."