Animals and plants are best protected in

Answer: Option C

Animals and plants are best protected in national parks.
A national park is a natural park in use for conservation purposes, created and protected by national governments. Often it is a reserve of natural, semi-natural, or developed land that a sovereign state declares or owns.
In national parks, plant and animal species, geomorphological sites and habitats are of special scientific, educational, and recreational interest or contain a natural landscape of great beauty.