While most organs will grow until maturity (when you stop getting taller), the will get bigger throughout childhood, but it will slowly shrink from once an individual reaches puberty and will continue to shrink throughout adulthood. as this gland shrinks, its tissues are replaced by tissues that are stored in fat cells (called adipose tissue). the reason it shrinks is because the thyroid has a reduced role during adulthood.

The correct answer is "thymus".

Explanation:

The thymus is a lymphoid organ which main function is to produce T cells used for protection in the immune system. While most organs grow until maturity, the thymus stops growing at puberty and starts to shrink throughout adulthood. The reason of the shrinking is that the thymus as a reduced role in adulthood because most of the T cells are produced during childhood. As the thymus shrinks, its tissue is replaced by adipose tissue.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

the correct answer is option d.

an appositive is a noun, noun phrase or noun clause which follows another noun or noun phrase in order to describe it or name it another way. they are usually used between commas, brackets or dashes.

the example sentence with the correct use of commas is the following:

her uncle, the man over there in the red shirt, owns the hardware store in town.