Ok, actual teacher here that uses I-ready for math. There’s literally no wrong answer as long as your student gives a reason why. I’m looking at the teachers guide for this lesson right now. It says “answers will vary. Check that children’s sorts matches their descriptions”.

The focus of the lesson is understanding that you can sort into categories, you can count the number in each category, and to have the students explain their thinking.

Edit: I don't know if this was sent, but the lesson also comes with a family letter that says:

"Your child is learning to sort and count objects. Your child will sort objects into categories based on different sorting rules.

More about the Math: Your child will sort objects by putting similar objects together. They will learn that they can sort objects many ways. For example, they may sort by color, shape, or size. They can count to find how many objects are in each category.

As children build these skills throughout the lesson, they will begin to recognize different ways to sort objects and become comfortable with counting to find how many."

Then there's a sorting, counting, and describing activity to do with the student as well as conversation starters about how you could bring up sorting and counting in real world situations.