Why do vaccines work for some diseases but not others?
o vaccines only work against viral infections.
o vaccines only work against bacterial infections.
o the antibodies produced by a vaccine only fight specific antigens.
o the antigens produced by a vaccine only fight specific antibodies.

The antibodies produced by a vaccine only fight specific antigens.

Explanation:

Antibodies only bind to specific antigen during an immune reaction. The introduction of foreign substance in the body stimulate the B-cells to produce antibodies that fight against infections. Only specific antibodies are produced following antigen presenting cells that bind to antigens. They capture and display the antigens to the antibodies.

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the answer is d (apex) good luck : ))