Hello, Mr. Kevyn.
I have a question on Q.14.
I chose 4 over 2 because of the incorrect part in 2.
That part is, 'beneficial in lower level'. I interpreted this as 'deficiency'.
Seeing that, 4 seemed like an answer to me.
it's honestly a tricky question.
note the word "lower level"
There is a difference between "deficiency" and "lower level".
