<span>The situation between Malia and Teresa can be solved. If Teresa is better at computer work, she can give Malia a hand within the slide show. She then can incorporate her timeline into Malia's slide show. This will benefit them both and show great teamwork as well.</span>
The third sentence. An abstract noun is a noun you can’t physically see or touch (examples of this are usually emotions like love, hate, excitement, etc). In the third sentence, opinion is a noun. You cannot see or touch an opinion.
I would say true
Hope this helps