Answer:
A They are both tools of foreign policy.
Explanation:
Both involve negotiations and trying to reach a compromise good for both parties.
Diplomacy could be viewed as a trade between government in which the product is the good faith.
Trade involves mostly companies and individuals exchanging goods and services for money.
If diplomacy between two countries is bad, trade can suffer (causing for example a trade/tariff war)... in which one party uses trade as a leverage to achieve diplomatic/political goals.
Trade and diplomacy existed way before the cybersecurity and terrorism concerns. And neither trade nor diplomacy has a general impact on the military equipment, they could have for one specific negotiation but not overall.
