Help me understand the steps to do this math problem. thank you

A certain gene typically appears in 30% of the population. Use the Central Limit Theorem together with z-scores and your percentile table to answer these questions. What is the chance that 33% or more of the people in a town of 1000 have the gene due to chance alone? Round to the nearest tenth of a percent. Select one: O a. 1.8% O b. 98.2% O c. 4.9% O d. 2.1% O e. 2.9%