Answer:
The foot
Explanation:
Mollusks have bilateral symmetry and are coelomed protostomes, but the coelom is only represented by small residual spaces around the pericardial cavity, the gonads, some parts of the nephridia, and in some cases part of the intestine. The foot is used primarily as a means of movement. The foot is also a very important structure, although it has adapted differently depending on the classes of mollusks. It is characterized by having a really powerful and complex musculature. The most widespread use of this organ is that of locomotion, as happens with gastropods. However, in bivalves it serves to burrow or in cephalopods it helps to provide propulsion.
Homologous structure is type of body structure that indicates evolutionary relatedness.
<h3>What is Homologous structures?</h3>
Homologous structures refers to body structures like organ or bone that have similar underlying anatomical features that exist in different animals. These structures entails that different animals descend from a common ancestor and serve as evidence of evolution.
Learn more about homologous structures here.
brainly.com/question/7904813
If my memory serves me well, the most suitable from given above is:
a) testes → epididymis → vas deferens → urethra
A) It creates air pollution
