Which would cause a boycott to fail?
a. the company spending a lot of money lobbying the government.
b. the government decided to make the company's practice illegal.
c. many of the company's executives quit because of economic pressure.
d. most consumers didn't stay away from the company.

I would say D. Most consumers didn't stay away from the company
because if your trying to boycott something then you are protesting against that company and you are not using whatever that company has, so if the consumers didn't stay away then they would still use and be around the company and that is not the purpose of boycotting

Hope this helps!! :D