In an insect,

a. nutrients are circulated through an open circulatory system.
b. the blood vessels do not form a continuous circuit
c. the fluid flowing through the heart is the same fluid that bathes the tissues.
d. the circulatory system is responsible for exchange of respiratory gases

In an insect, A. nutrients are circulated through an open circulatory system.

Explanation:

Insect respiration is independent of its circulatory system, that's way the blood does not play a direct role in oxygen transport and the circulatory system is responsible for exchange of respiratory gases. Insects also have an open circulatory system as opposed to our closed circulatory system.

answer; i believe that the correct answer is(d) nondisjunction during meiosis;

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.