Question

what is the purpose of waxes for plants and animals?
protection
lubrication
oxidizing agent

Explanation:

In biology (a subfield of Natural Science), waxes in plants (e.g., cuticle wax to prevent water loss and protect from pathogens) and animals (e.g., ear wax, skin waxes) primarily serve a protective function. Lubrication is not their main role, and they don't act as oxidizing agents. So the correct option is "protection".

Answer:

A. protection