Answer:
I, 2, 3, 4 and 5
Step-by-step explanation:
The quality of education one acquires as an effect on one's income. Higher educational background attracts more income
The skills one possesses either inherent or acquired also determines one's earning
Course studied in college is also a determining factor to one's income. Professional courses will earn more income
Experience plays a role in income determination. Greater the years of experience will attract more income
Supply and demand also play a key role in income level. Increy in demand will invariably lead to increase in supply which will bring about a corresponding increase in income