Question

How was Dr. Berk and Dr. Tan's research measured?

A. By measuring brain scans
B. By measuring physical growth
C. By timing laughter rates
D. By measuring changes in blood samples

Answer 1

D) By measuring changes in blood samples.

Step-by-step explanation:

Dr. Berk and Dr. Tan collected blood samples and measured their interferon-gamma (IFN) before, during, and after the participants had watched the video. This was done in order to focus on the laugher immune connection.

Answer 2

blood sample

Step-by-step explanation:

to see how the person blood is at and if there is something wrong