____ is an example of an incomplete dominant inheritance

Imara, at age 55, complains that the headlights of approaching cars are more blinding, and it's difficult for her to see when driving at night. These problems are:

A) normal age-related changes caused by a cloudier lens. B) signs that Imara is probably going blind. C) normal age-related changes caused by an impaired retina. D) signs that Imara needs stronger glasses.

Which of the following research techniques would be most useful to a researcher investigating what 5th graders like most about their best friends?

A) Structured observation B) Naturalistic observation C) Self-report D) Case study