Question

which of the following is a feature of all mammals? claws horns produce milk cold blooded

Explanation:

A defining feature of all mammals is that female mammals produce milk to nourish their young using mammary glands. Claws and horns are not universal (e.g., whales lack claws/horns), and mammals are warm-blooded, not cold-blooded. Thus, producing milk is the only feature common to all mammals.

Answer:

produce milk