In a school, there are five teachers A, B, C, D and E. A and B teach Hindi and English. C and B teach English and Geography. D and A teach Mathematics and Hindi. E and B teach History and French. Who teaches maximum number of subjects?

The correct option is B.

To find out who teaches the maximum number of subjects, let us analyze the information given for each teacher and list all the subjects taught by them step-by-step:

Step 1: List the subjects taught by each teacher based on the given statements.
1. "A and B teach Hindi and English"
- Teacher A teaches: Hindi, English
- Teacher B teaches: Hindi, English

2. "C and B teach English and Geography"
- Teacher C teaches: English, Geography
- Teacher B also teaches: Geography (in addition to Hindi, English)

3. "D and A teach Mathematics and Hindi"
- Teacher D teaches: Mathematics, Hindi
- Teacher A also teaches: Mathematics (in addition to Hindi, English)

4. "E and B teach History and French"
- Teacher E teaches: History, French
- Teacher B also teaches: History, French (in addition to Hindi, English, Geography)

Step 2: Count the total unique subjects taught by each teacher.
- Teacher A: Hindi, English, Mathematics ⇒ Total = 3 subjects
- Teacher B: Hindi, English, Geography, History, French ⇒ Total = 5 subjects
- Teacher C: English, Geography ⇒ Total = 2 subjects
- Teacher D: Mathematics, Hindi ⇒ Total = 2 subjects
- Teacher E: History, French ⇒ Total = 2 subjects

Conclusion:
Teacher B teaches the maximum number of subjects, which is 5 subjects (Hindi, English, Geography, History, and French).