The efforts of the u. s. government to apply its antitrust laws extraterritorially are:
a. strongly resented by other governments.
b. not different than european and japanese efforts.
c. welcomed by other governments.
d. cooperated in by other governments.

The efforts of the u.s. government to apply its antitrust laws extraterritorially are strongly resented by other governments.  A is correct, because countries basically hate it when the US interferes.  Obviously, C and D are incorrect.  And I don't believe the EU or Japan interferes either, so B is wrong.  A is the only answer.

A. strongly resented by other governments

The answer would be advertising.