The clumping of blood from mismatched blood types is a problem for a patient because:

it slows down digestion.

it changes blood composition.

it causes infection.

it clogs the blood vessels.

The correct answer is-

it clogs the blood vessels.

During blood transfusion, if the blood type of donor is different than the blood type of patient (recipient), a reaction of ABO incompatibility will occur, causing attack to the new blood cells by the immune system. The antibody will be produced against the antigen present on the new blood cells, showing agglutination reaction.

As a consequence, the clumping of blood from mismatched blood types will occur, which clogs the the blood vessels.

Thus, option D) is the right answer.

answer; /// i believe that the correct answer is ( monophasic ); ethinyl estradiol- ethynodiol diacetate is a monophasic oral contraceptive agent; ///

answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.