Which executive agency would most likely investigate cases of espionage?
a the central intelligence agency
b the department of state
c the department of defense
d the securities and exchange commission

The first alternative is correct (A).

The executive agency dealing with espionage cases is the Central Intelligence Agency (CIA).

The CIA is the body responsible for conducting secret investigations in search of suspicious activity that could jeopardize national security. In this sense, the CIA provides strategic information to the government, which takes appropriate measures to protect the American nation and, eventually, the world.

my cultural heritage consists of irish, german, native american, and others.

the government paid religious orders to provide basic education to native american children on reservations. in the late 19th and early 20th centuries, the bureau of indian affairs (bia) founded additional boarding schools based on the assimilation model of the off-reservation carlisle indian industrial school.