Answer: A.Majority
Step-by-step explanation:
...it is going to be difficult to gain the Majority of votes necessary to avoid a runoff.
The consultant here seems to be referring to a Runoff type of election where there are two rounds to voting. In this type of election, when no contender gets over 50% of the votes which is considered a Majority, the election goes to a second round with the highest 2 contenders or in some cases the contenders past a certain threshold then contending amongst themselves.
The Consultant is telling the candidate that the other candidates are quite strong so them getting the Majority vote required to avoid a second round will be tough.