Answer: c) He should start advertising for job openings on the local Spanish radio station.
Step-by-step explanation:
This realization by Paul should make him want to hire more Hispanics into the company and the best way to do so would be to advertise it in such a way that Hispanics have a better chance of hearing about job openings.
Advertising on Spanish radio would ensure that Hispanics hear the advertisements because they are the main ethnicity that speaks Spanish. This will give them an edge in learning about job openings and enable Paul to hire more Hispanics.