The commonly used external sources of recruitment are :

A. Casual callers

B. Transfer

C. Promotions

D. Direct recruitment

E. Campus recruitment

Choose the correct answer from the options given below :

A, D and E only

The correct answer is option (1) : A, D and E only

External sources of recruitment refer to the methods and strategies that organizations use to attract and acquire new employees fro outside the company. These sources involve seeking and hiring individuals who are not currently employed within the organization.

The commonly used external sources of recruitment are :

A. Casual callers

D. Direct recruitment

E. Campus recruitment

So, the correct answer is 1. A, D and E only.