Choose the meaning of the term "Ad-hoc" from the options given below:

A. Teacher
B. Advance payment
C. Made or done suddenly for a particular purpose
D. Quickly stepping inside a hall

Choose the correct answer from the options given below:

C only

The correct answer is Option (1) - C only -- Made or done suddenly for a particular purpose.

Ad-hoc means something made or done suddenly for a particular purpose, without planning ahead. It describes something that is temporary or created specifically for a particular situation or task.

Teacher - This is a profession, not a way of doing something.

Advance payment - This refers to a payment made before something is received, not the purpose behind doing something.

Quickly stepping inside a hall - This describes an action, but not the nature or planning behind it.