D. They worked as agriculture laborers.
One characteristic common to all behaviorist theories of development is an emphasis on the effect of the environment on learning.
<h3>Which is a characteristic of behaviorist theory?</h3>
Behaviorism focuses on the belief that all manners are learned through interaction with the environment. This learning theory comments that behaviors are learned from the environment, and displays that innate or inherited factors have very little impact on behavior.
Behaviorism highlights the role of environmental factors in affecting behavior, to the near exclusion of natural or inherited factors. One characteristic shared by all behaviorist learning approaches is an emphasis on the effect of the environment on education.
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Answer: the ability of the witness to explain the probability that no other person, except an identical twin has the same DNA type as that discovered at the crime scene.
Explanation:
DNA (deoxyribonucleic acid) can be obtained from blood, hair, and many biological materials.
DNA evidence is one of the most secure methods applied to criminal cases, even for offenses from before the advancements in DNA-testing technology.
However, identical twins share the same DNA, so their DNA is not useful as evidence of a crime, nor a paternity test.