Which of the Following Is an Example of Haptics Research

Multiple Choice

Which of the following is an example of haptics research?

A) Numerous studies find people who smile regularly are rated more attractive than those who smile less often.
B) Researchers undertake a study to determine if there is a relationship between tardiness and students' academic performance.
C) Scientists conduct experiments to establish the average distance at which people feel their personal space is invaded.
D) Restaurant servers who lightly touch customers' hands or shoulders earn more in tips, according to researchers.