Blood proteins that attack and inactivate bacteria and viruses that cause infection are called
a. hormones
b. enzymes
c. antibodies
d. motor proteins

c. antibodies

Explanation:

Antibody is a protein that reacts against an antigen in an animal-type organism. Antibodies, which can be found in the blood or other body fluids, are used by the immune system to recognize and block viruses, bacteria, parasites or fungi. The most frequent antibody is formed by structural basic units that have four chains: two light and two heavy. The B lymphocyte is responsible for synthesizing the antibodies, which can be divided into five different classes in the case of mammals.

so we know the answer cannot be c because no insect or animal starts as an adult

the answer is a. a swimming larvae

because since they are sea animals they automatticaly have to know how to swim they cannot just sink to the bottom

sorry if this is the incorrect answer.

answer: proteins

explanation: complement is   system of circulate in the blood in a inactive form

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