At the End of a Three-Year Study,Susan Finds That 12

question 53

Multiple Choice

At the end of a three-year study,Susan finds that 12 percent of her participants did not take part in the final survey because they moved away.In research terms,Susan is experiencing a _____ problem.

• A) maturation
• B) testing
• C) history
• D) mortality

---

Definitions:

Type AB

A blood type in the ABO blood group system that has both A and B antigens on the surface of its red blood cells and is considered the universal plasma donor.

Type B

typically refers to a personality trait characterized by less competitive, more relaxed behaviors as opposed to Type A personality.

Environmental Influence

The impact of surroundings, including physical, biological, and socio-economic factors, on living organisms and their development.

Hydrangeas

A genus of flowering plants known for their large, showy blooms that can change color based on the soil pH.