(a) 'Yellow Security Services Ltd.' is using 'External sources' for recruitment.
(b) One of the disadvantages of an external source of recruitment is that it is a costly process. In order to recruit people from outside, the company is required to invest a lot of money in advertising and processing of applications. Thus, it is said to be a costly process of recruitment.
(c) The 'Security Guards' are fulfilling the 'Basic Physiological Needs' as per Maslow's need hierarchy. This kind of need implies meeting the essential requirements for the sustenance of life. For example, food, clothing, and shelter.
(d) The following are the two values communicated to the society:
i. To promote honesty and punctuality among people
ii. To provide employment opportunities to unskilled people