Which of the following is a testable hypothesis? A. Classical music is better than jazz because stringed instruments,
like violins, are used.

B. Garden plants grow better in wet soil than in dry soil.

C. After a long discussion, the people at the meeting finally agreed
that it was time for lunch.

D. Cats have a completely different personality in comparison to
dogs.

The answer is B.

If you put one plant in wet soil, and one plant in dry soil, you can prove or disprove your hypothesis as the plants grow.

the wires in the toaster turning red and the toast crisping and turning brown

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.