#Help based on the skill builder on the next page, shouldn't the example on this page be like this?

[subject] scientists

[predicate verb] discovered

[predicate object] that

[object clause] the sky is blue

#help on the previous page, it says "that the sky is blue" is the predicate object. However, question 1 says "that" is the predicate object and "cells have the ability to heal themselves" is the object clause. Why is that? Going off of this skill builder shouldn't the previous page say "that" is the predicate object and "the sky is blue" is the object clause?

#help I have gotten every single question in this module right without having to diagram. should I still be diagraming anyway? I feel like its easy for me to intuitively see the form of the arguments in this module without having to break it down in lawgic.

I have gotten every single question right without having to diagram. Should I still be diagramming?