Pick the odd one out.

​​Let's analyze the given options to determine the odd one out:

Reptile - A class of cold-blooded vertebrates (e.g., snakes, lizards).

Mammal - A class of warm-blooded vertebrates that give birth to live young and produce milk (e.g., dogs, humans).

Man - Specifically refers to humans, which are a species within the mammal category.

Avian - A class of birds.

Reptile, Mammal, and Avian are broad classifications of animals.

Man (Humans) is a specific species, not a classification like the others.

Thus, correct option is (c).