The correct answer is **d. c and d**.
Explanation:
- Option **a** is true, as the formal sector may not have enough jobs to absorb all workers, which drives people to informal employment.
- Option **b** is also true, as the informal sector can help keep prices lower by providing goods and services without the overhead costs of formal businesses.
- Option **c** is true, as informal sector workers often operate without permanent business sites due


