Help with the question!!

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel?

Over the course of a month, a person's weight decreases. what type of relationship is this? a. positive relationship