Using it's concept, it is found that the probability that a person with an iron deficiency is 20 years or older is given by:
c. 0.60
A probability is given by the number of desired outcomes divided by the number of total outcomes.
Researching this problem on the internet, it is found that there are 102 people with iron deficiency, and of those, 37 +24 = 61 are 20 years or older, hence the probability is given by:
p = 61/102 = 0.6.
More can be learned about probabilities at https://brainly.com/question/14398287
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