The external source of recuritment are
1. Lay-off
2. Casual callers
3. Recommendations
4. Campus recuritment
Select the correct answer:

Solution (By Examveda Team)

This question asks about external sources of recruitment. This means where a company finds potential employees from outside the company.
Let's look at each option:
1. Lay-off: This is when a company *fires* or *ends employment* to an employee. This happens *within* a company, not from an outside source. So, lay-off is not an external source.
2. Casual callers: These are people who walk into a company or send in resumes on their own, hoping for a job. They are external candidates, not existing employees.
3. Recommendations: This refers to getting potential employees referred by current employees or other external contacts. This is definitely sourcing from outside the company.
4. Campus recruitment: This involves companies visiting college and university campuses to find and hire new graduates. This is a very common method of external recruitment.
Therefore:
* Lay-off (1) is *not* an external source.
* Casual callers (2) *are* an external source.
* Recommendations (3) *are* an external source.
* Campus recruitment (4) *are* an external source.
So, the correct answer is Option D: 2, 3 and 4.