In the context of ethical decision making, the greater the degree of agreement among managerial peers that an action is harmful, a. the more likely that marketers will recognize a problem as unethical b. the fewer the individuals in the organization are likely to get affected by the action c. the lesser the likelihood that the action will result in a harmful outcome d. the fewer the number of persons affected by the negative outcome

The answer is option "a. the more likely that marketers will recognize a problem as unethical".

Ethical decision-making alludes to the way toward assessing and picking among options in a way steady with moral standards. In settling on moral choices, it is important to see and take out untrustworthy choices and select the best moral option. when we talk about the process of how to make an ethical decision, it requires 3 things to keep in mind;
Commitment: when you want to make the best decision paying little heed to the cost. 
Consciousness: It refers to the attention to act reliably and apply moral feelings to every day conduct. 
Competency: which is the capacity to gather and assess data, create choices, and predict potential outcomes and dangers.