False ,
The punctuated sentence will be :
His doctor at any rate , could not identify the problem.
Its C (inform) because the author is trying to inform the people about the lessons about human behavior.
I hope this was helpful.
I think online education is becoming so popular because they're many people who can't go to school for various reasons; Maybe because of health problems, far house, or maybe just because they wanna stay at home! You can do multiple activities during the school year if you're studying online. And guess what! You can study from ANYWHERE and ANYTIME you want to!
<em>This is what I <u>know</u>, I hope it helps you!</em>