Question

Given that D is the midpoint of AB and K is the midpoint of BC, which statement must be true?

DB=BK
B is the midpoint of AC.
D bisects AK.
AK + BK = AC

Answer 1

AK + BK = AC

Explanation:

AK + BK = AC

Answer 2

All the statements are not true except:
AK + BK = AC
Since BK = KC, so
AK + KC = AC

DB=BK is not necessarily true since it is not stated whether AB = BC
B is the midpoint of AC is not necessarily true since again it's not stated that AB = BC
D bisects AK is not necessarily true since it is not stated that D and K lie on the same line.