Stereotypes are any commonly known public belief about a certain social group, culture, race or a type of individual. For example, Italian and French people are the best lovers. That's a stereotype.
The speaker in the poem "The first lesson" is C. a parent.
The poem tells a story about a parent and his daughter in a pool or some other water, and the parent is teaching his kid how to swim. Of course, the whole poem is a metaphor - it's not really about swimming, but an important lesson that a parent has to teach his child about life itself.
Answer:
They have antifreeze proteins in their blood.
