Final answer:
Men with high testosterone having both more sex partners and being more vulnerable to disease is an example of the principle of adaptations that adaptations are often compromises between costs and benefits.
Step-by-step explanation:
Men with high testosterone having both more sex partners and being more vulnerable to disease is an example of the principle of adaptations that adaptations are often compromises between costs and benefits. In this case, the benefit of having more sex partners is an increased chance of reproduction, but the cost is a higher risk of contracting sexually transmitted diseases. This trade-off represents the compromise involved in adaptations.
Learn more about Principle of adaptations