Dr. Lonsbary is considering doing a follow-up study in which instead of asking participants to listen to music to induce mood, she has them write either a story about a character who just won the lottery or a story about a character who just experienced the death of their spouse. This change in the mood variable is designed to enhance the study’s validity. a) External validityb) Statistical validityc) Internal validityd) Construct validitye) None of the above

a) External validity                                                        

Explanation:

External validity: In research methods, the term "external validity" is described as validity that is being utilized for applying the achieved conclusions related to a scientific study or research outside the conditions of the given study or research. In short, it is described as the degree to which the results of particular research or study can be "generalized" across and to any other people, situations, times, and stimuli.

In the question above, the given statement signifies the "external validity".

dude you should crop your image so only the question shows. but   can you explain it better