What does this quote means.? "THE ONLY
THING MORE
EXPENSIVE
THAN
EDUCATION IS
IGNORANCE”.

Blunders caused by ignorance, on the other hand, have no such limitations and there is no way to tell when they will happen.

Education is expensive but there is an upper limit how much you can spend on it – eventually, you will run out of books to buy and teachers to pay. Blunders caused by ignorance, on the other hand, have no such limitations and there is no way to tell when they will happen.

two factors or characteristics of a chapter that might make it difficult to read would be words i don't understand, or if i don't fully understand what's going on in the chapter. strategies i can use to get through the difficult material would be a dictionary, and re-reading previous chapters to get a better grasp of what the author is trying to say.

i believe the answer is: b. mr. head had a long, tube-like face with a rounded open jaw and a short depressed nose.

this is because in the un-revised sentence it said that mr. heads face was long and tube-like, and he had a rounded open jaw. this is not a very grammatically correct because of how it seems to drag on with the and, replaced with, with, makes it sound more fluent in the description.