Answer :
Research confirms that a common contributor to three of the leading causes of death is overnutrition. Thus option B is correct.
What is Research?
Research refers to deep investigations of the data and information available to provide credentials with facts and figures to provide results that will utilize for the new research.
Overnutrition is the situation in which nutrients present in food are consumed in excess quantity which affects the health of results and according to research it is the cause of death as well due to toxicity.
Therefore, option B overnutrition is appropriate.
Learn more about overnutrition, here:
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The complete question is -
Research confirms that a common contributor to 3 of the top 5 causes of death is:
a. undernutrition.
b. overnutrition.
c. depression.
d. vitamin deficiency.