Considering that males can have klinefelter (xxy) syndrome, xyy, and normal xy chromosomal combinations, and females can have turner (xo) syndrome, poly-x (xxx, ), and normal xx combinations, it is obvious that

(a) maleness results from the presence of only one x chromosome
(b) maleness results from the absence of two or more x chromosomes
(c) maleness results from the minimal presence of one y chromosome
(d) femaleness results from the presence of two or more x chromosomes

(C) maleness results from the minimal presence of one Y chromosome

Explanation:

Human males have one Y and one X chromosome as their sex chromosomes. However, the human males with Klinefelter (XXY) syndrome have two copies of X chromosome as the human males but also have one Y chromosome. Similarly, human females have two X chromosomes as sex chromosomes but the females with Turner (XO) syndrome have only one X chromosome and the females with poly-X (XXX, ) have more than two X chromosomes.

This means that the  Y chromosome regulates sex in human beings. If one copy of the functional Y chromosome is present in the cells, the fetus will develop into a male. The absence of a functional Y chromosome will make the fetus develop into a female.

i might be wrong but i think its a. let me know if i’m right and have a good rest of your day!