Which of the following donor-recipient combinations during blood donation will cause agglutination?

Donor - Rh positive, Recipient - Rh positive

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Donor - Rh negative, Recipient - Rh negative

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Donor - Rh positive, Recipient - Rh negative

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Donor - Rh negative, Recipient - Rh positive

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Solution

The correct option is C Donor - Rh positive, Recipient - Rh negative
The blood of Rh positive people has the Rh antigen, whereas Rh negative blood does not. Hence, when Rh positive blood is donated to an Rh negative person, the blood of the recipient develops antibodies against the Rh factor and hence, causes agglutination.

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