According to the theory proposed by harry hess, what causes continents to move? continental drift magnetic polarity seafloor spreading deep-ocean trenches

According to the theory proposed by Harry Hess, what causes continents to move?

The correct answer is : seafloor spreading.

Earlier, in 1912 Alfred Wegener produced evidence that the continents are in motion but this idea was shelved as he could not explain what forces the continents to move. So, almost 50 years later Harry Hess confirmed Wegener's ideas by using the evidence of seafloor spreading to explain what moved continents.

(C)

Explanation: seafloor spreading.

it is either c or d and i know for sure it is not a or b

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.