Suppose you are Arif, a student of Class VI. There is no safe drinking water in your school and many students are falling ill. Now prepare an application to the Headmaster requesting installation of a water filter and regular supply of clean drinking water. Also prepare short related items asked below.

a. Write the full formal application to the Headmaster (include date, address, subject, body, closing and signature).

b. Write a suitable subject line for the application (one sentence).

c. Give three brief reasons (each one sentence) why the school needs a water filter and clean drinking water.

d. Write the polite closing line and the signature block you would use (name, class, roll no.).