According to the diagram, in which age classes do females outnumber
males?

D. C, E and F

Step-by-step explanation:

The diagram shows the numbers of females and males on a population of elephants. You can read these kinds of diagrams by comparing the two sides of the pyramid and reading the values on the line bellow (axis X). Each of the lines represents an age cohort, which is defined on the table on the right.

Therefore, the classes where there are more females are:

C: Females: 2 ;  Males 1

E: Females: 7  ;  Males 4

F: Females: 2  ;  Males 1

On the others, either there are more males than females, or an equal number:

A: Females: 9  ;   Males 10

B: Females: 9  ;   Males 9

D: Females: 1   ;   Males 2

answer: i'm not going to give you the answer, but some hints to work it out.

step-by-step explanation: so, if there is a straight line that means that the line angle is 180°. so we subtract the 2 angle measures provided, (15 and 38) from 180. so the answer is 180 - (38 + 15). (you have to solve the equation)