Concept:The total number of pupils offering Mathematics is found by adding all pupils inside the Mathematics circle in the Venn diagram.
Explanation:The Venn diagram shows the Mathematics set
M and the English set
E.
Pupils who offer Mathematics include those who offer only Mathematics and those who offer both Mathematics and English.
From the diagram, the number offering only Mathematics is
18.
The number offering both Mathematics and English is
7.
Therefore, total pupils offering Mathematics
=18+7=25.
Answer:25 pupils offer Mathematics, which is option C.