The final product can efferent arterioles, which to minimize the decrease in gfr due to low blood pressure.

The correct answer is - vasoconstrict due to angiotensin 2.

Explanation:

The low blood pressure activates the renin-angiotensin-aldosterone system in the kidneys. Renin is a hormone that results in the release and production of the angiotensin II that leads to the release of the aldosterone in kidney.

The angiotensin also causes the efferent arterioles that help to decrease in the GFR which helps in increasing the blood flow with the help of the aldosterone.

Thus, the correct answer is - vasoconstrict.

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

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.