The only correct grammar rule, using examples from the t...

A

adverbs of frequency are always used after verbs, as in it is often under-appreciated… (line 02).

B

adjectives can be used in a noun position after verbs as in feel good (line 07).

C

the use of whether and if is interchangeable, as in whether it is to teach or (line 08).

D

abstract nouns like knowledge (line 01) and understanding (line 02) are not preceded by indefinite articles.

E

the prefix out- , as in outweigh (line 10), always gives a verb the meaning of bigger.