What is the main function of structural adaptations?

a. they the organism survive in its environment.

b. they the organism find a mate in other environments.

c. they serve no useful purpose.

d. they provide a home for the organism.

I think the correct answer from the choices listed above is option A. The main function of  structural adaptations is that they  help the organism survive in its environment. These adaptations are physical features of an organism like the bill on a bird or the fur on a bear.

Digestion because it removes waste

Lysosomes contain digestive enzymes (lysozyme) and in digestion of different biomolecules like proteins, fats, starch, etc.cleans the cell by destroying damaged organellesprotects cells from certain virus/bacteria by killing them