sakshamchhabra
Nightmare007
IMO E is best option = but doesn't it require a "," before "and precipitated" ? need advice thank you
.
experts, please help
I stumped on this during my practice test, because there is another nested X and Y structure, I thought it was necessary to add a comma.
thankyou
Replying to your PM
sakshamchhabra,
Comma+ AND uses-
1.
In a list: the usage is optional, but GMAT questions almost always have a comma
Comma+ AND can be used for ANY list having 3/more items.
Natalie crossed the street, running, painting, and dodging the traffic-- here, the comma before AND is not necessary
2.
To separate two independent clauses: Mandatory
I went home, and then I slept. - 2 independent clauses connected by COMMA+ FANBOYS
I went home, then I slept- incorrect
I went home and slept- Correct; 2 verbs are added, not two clauses-- comma is not to be used
I went home, and slept - incorrect
In OA(E), "a weak national infrastructure of banking and credit" is a case of a list with 2 items. Thus, 'comma+ AND' rule for a list is not applicable.
Hope this helps!