Cross-sectional design research could be seen as a research where information for research are been collected from various population at a particular period of time. They are used in different cases, to find ratio in an ailment spreading and what's leading to the increase. Professor Grant collection of data from various groups to study developmental sense of humor indicates a cross sectional design.
The Correct Answer is C. He closed his restaurant because he refused to serve blacks after integration was passed. I promise this is the correct answer I just finished the test myself. Please crown me brainliest!!!
