Select the type of variable that best describes the following observation, Answer by choosing multiple choice: A)Continuous B)Discrete C)Ranking D)Attribute

1)the presence or absence of an infection in individuals

2)pH of muscle tissue

3)The volume of red blood cell

4)The body temperature of humans at birth

5)Number of eggs laid by a robin

6)Tail length of sperm cells

7)Sex of a tree frog

8)the genotype of individuals (for example, AA, Aa, or aa)