Researchers wanted to know if there is a link between proximity tohigh-tension wires and the rate of leukemia in children. To conduct thestudy, researchers compared the rate of leukemia for children who lived within1/2 mile ofhigh-tension wires to the rate of leukemia for children who did not live within1/2 mile ofhigh-tension wires. The researchers found that the rate of leukemia for children nearhigh-tension wires was higher than the rate for those not nearhigh-tension wires. Can the researchers conclude that proximity withhigh-tension wires causes leukemia inchildren?

(This is a reading assessment question. Be certain of your answer because you only get one attempt on thisquestion.)

A.

No, because this is a designed experiment.

B.

Yes, because this is a designedexperiment, which allow for statements of causality.

C.

Yes, because this is an observationalstudies, which allow for statements of causality.

D.

No, because this is an observational study.