"which segment of the hypotenuse is adjacent to segment ab?

a. ec
b. ac
c. ae
d. be
"

BE

Explanation:
Adjacent segments are defined as :
"Two segments that intersect (meet) at the vertex of the polygon"

Now, in the given triangle, there are two segments that form the hypotenuse:
segment BE and segment EC

Now,we want the segment that is adjacent to AB
We can note that:
segment BE meets segment AB at the vertex B
segment EC does not meet segment AB at any vertex

Based on the above definition, segment BE would be the portion of the hypotenuse that is adjacent to AB

Hope this helps :)