The decision-making role in the family unit that often initiates the family decision-making process, suggests alternatives to consider, as well as provide input to the final decision is the .

influencer

Explanation:

An influencer is a person who can influence the decision-making process of other family members or in the general audience. An influencer can affect the decision in terms of the purchase of goods. An influencer also has a role in making public relationships at the corporate level.

The influencer can present alternatives and can also provide inputs that influence the final decision of the family, company or general public.