Answer: Its asking what is something that is holding him back (such as a broken leg or being not intelligent)
If you asked your friend to hand you a book and he handed you a pencil instead, it is phonology as a language system that is most likely broken down. Phonology deals with systems of sounds which includes phonetics in a specific language.
The answer would be the first choice.
Put the fertilizers in the plants and want and see if the plant grows
Answer:
B
Explanation:
Indistinguishable is like you can't tell the difference.