Which experiment is least likely to be affected by bias? a) a poll is taken of the class's favorite musical artist b) the shoe size of 100 randomly selected people is collected and recorded c) 100 people, randomly chosen, sample and then select the best tasting diet soda d) the level of audience applause is used to select the winner for the talent show

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.

the correct answer is d

ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'