People who decline to buy the products of a firm whose activities they disapprove, especially whenever such rejection is intended to support the employees who are on strike, and who advise others to not purchase such products, or to not deal with these firms, are engaged in: (i) Embargo. (ii) Illegal strategy. (iii) Trade war. (iv) Boycott.
Can someone please help me in finding out the accurate answer from the above options.