Observe the given figure and read the statements that follow :

Statements :
A. All teachers are doctors
B. Some doctors are teachers
C. All surgeons are doctors
Which of the following is true :

Solutions: lets look at all the statements one by one.

A. All teachers are doctors
This statement is false as the triangular area that represents Teachers is not completely under the circular region that represents doctors.

B. Some doctors are teachers.

This statement is True as some part of the triangular region that represents teachers is under the circular region that represents doctors.

C. All surgeons are doctors

This statement is also true as the entire square region that represents surgeons is under the circular region that represents doctors.

Therefore option c is true.