Answer:
The answer is Fred frequently builds strong alliances with others.
Explanation:
This statement, refers to the capability of Fred of making good relationships with others.
In politics, build a strong alliance is necessary, because the work that a politic do is some sort of public relationship, so the ability of making strong alliances can be traduced in having a political frame of reference.
So if colleagues describes him as that, it means he has the ability of making well based relationships and useful connections with people.