(GIVING BRAINLIEST) Which variable is described as a factor you can change to observe whether or not it has an effect on the outcome variable?

A) Control
B) Hypothesis
C) Test
D) Question

wowo

Explanation:

i think that c)gold was found there

but i am not sure

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.