Please help on this question

The answer is A 1 individuals/ square km

Explanation:

The diagram shows 9 dots (people) inside a square (area) of 3 km by 3 km.

If you find the area of the square (3*3=9 km) you get 9 km. if you divide the amount of people by the area you get 1 person for every square km. Which mean the answer is A.

answer; ///i believe that the correct answer is (the worksheet);

answer; i believe that the correct answer is ; males are hemizygous for the x chromosome;