Answer: Option C
Explanation:
Unrelated diversification can be defined as the form of diversification when the business adds some of the new products not related to the core strength or core products of the company.
It tries to penetrate into some other business. Example: A shoe making company starts making sports wear.
The companies whose core strength is skilled and specialized and has only few applications outside the core skills. These company can pursue unrelated diversification instead of related.