Respuesta :
The answer is B. because shoes size would have no element of opinion.
Answer:
B) The shoe size of 100 randomly selected people is collected and recorded
Explanation:
The experiment that is least likely to be affected by bias is collection and recording of the shoe sizes of 100 randomly selected people.
Shoe sizes are fixed and belongs to a category of variable known as measurement variable. It can be measured directly using relevant instruments such as a measuring tape.
The variables being measured in option A, C, and D are descriptive and can easily be subjective to individual's bias.
Hence, the correct option is B.