The adaptive (specific) defense system: issues an attack specific to particular foreign substances. hence, option A is correct.
Adaptive immune responses are designed to eliminate invading infections and any harmful chemicals they create. Because these responses are harmful, they must only be elicited in response to molecules that are foreign to the host, not the host's own molecules.
Antibodies and lymphocytes make up the adaptive defense, which is also known as the humoral and cell-mediated responses. The term 'adaptive' alludes to the distinction between self and non-self, as well as the tailoring of a response to a specific foreign invader.
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