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Assertion : $Cu-T$ and $Cu-7$ do not suppresses sperm-motility.
Reason : Hormones released by them affect sperm motility.
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
If both the Assertion and Reason are incorrect.
If the Assertion is correct but Reason is incorrect.
Solution
$Cu-7$ and $Cu-T$ are intrauterine contraceptive devices for females. They do not suppress sperm motility. Their mode of action is different. $Cu-T$ and $Cu-7$ discharge $50-75$ micrograms of ionic copper into the uterus daily. These copper ions interfere with life sustaining functions that regulate implantation in the uterus. No any hormone is released by them.
