Answer:
A government raising taxes on imports ( A )
Step-by-step explanation:
Foreign policy is a government policy/strategy made by a government to protect its interest in dealing with other nations. it is made by a government in order to help the Government achieve its goal in international relations effectively.
A government raising taxes on imports is a foreign policy made by the Government in order to generate revenue for itself in the international market.
A company opening an office in another country is not a foreign policy because it doesn't represent the interest of any Government but the interest of the company.