Which of the following statements is the most accurate? Food can travel up the stem in the phloem
Food can travel down the stem in the phloem
Food can travel up or down the stem in the phloem
Food can travel up or down the stem in the xylem

a chair, a bed, and a toothbrush

explanation:

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.

if you listed your answers right then i believe your answer is b.

c is the correct answer!