Researchers have strong connection between the amount of athletes foot powder

see below.

step-by-step explanation:

the true answer is none of them.

the answer the problem thinks is correct is a. transitive property of equality.

this problem is incorrectly formulated.

in equality, if a = b, and b = c, then a = c by the transitive property of equality.

there is no such property for congruence.

for congruence, there is a theorem that states:

congruence of angles is transitive.

this is a theorem that can be proved.

the true reason for statement 4 is the theorem: congruence of angles is transitive.