A college health center identifies lack of testicular self-examination among students and implements an intense summer wellness program focusing on the benefits of testicular self-examination. Afterward, a count indicates an increased number of students who do not complete testicular self-examinations?A. History
B. Maturation
C. Testing
D. Mortality
E. Selection bias

The provided question does not include the question related to the statement and options, however the question is as follows:

Which internal validity threat is suspected?

A. History

B. Maturation

C. Testing

D. Mortality

E. Selection bias

The correct answer is - D. mortality.

Explanation:

Aspects or influences other than independent variables that might be helpful to analyze and describe the result of a study considered as the Threats to the internal validity.

Mortality is most likely to be the threat to internal validity as Experimental mortality is significant threat to internal validity in the case of the longer time since the dropouts increases.

Thus, the correct answer is - D. mortality.

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