Final answer:
Multiply the hourly wage of $20 by the monthly hours worked of 100 to get a monthly income of $2000, making the answer A. $2000.
Step-by-step explanation:
To calculate the monthly income based on an hourly wage, you need to multiply the hourly pay rate by the number of hours worked in a month. In this scenario, the wage is $20 per hour, and the individual works 100 hours a month. Thus, the monthly income would be calculated as follows:
Monthly Income = Hourly Wage × Hours Worked per Month
Monthly Income = $20/hour × 100 hours/month
Monthly Income = $2000/month
Therefore, the correct answer to the question is A. $2000.