@ bublii
As you asked about my approach here is my answer:-
Well i applied the knowledge of parts of speech. In the sentence, THREE WOMEN (NOUN-SUB) and SUPPORT (NOUN-OBJECT), and we know that ADJ modify (NOUN) and ADV modify (VERB and ADJ)
Thats it, this is all we want to know
Op A:- Although i read this rule somewhere that an -ING form, if immediately following a Possessive then that choice is almost always wrong, because it create AWKWARDNESS (for more info see the link provided by Rohu), But see this option in terms of parts of speech..please try to understand patiently..
if this option is correct, then it means
labor's(Adv) unqualifying(Adj) support(N)....this is not correct..why see,
Reason 1:-
we know "support" is a noun, so, "unqualifying" should be an ADJ which is suspicious because i know unqualified is an ADJ for sure that means "unqualifying" is not an ADJ, Moreover, "unqualifying" seems like an ADV, and later i come to know "unqualifying" is actually not even a word in dictonary, but even if u consider this as an adverb then the placement is wrong as it can not modify a noun "support"
Reason 2:-
Even if you missed the above point then look at the POSSESSIVE...As per my knowledge, Possessive always works as ADJECTIVES, not ADV etc...so even if you missed and consider "unqualifying" as an adjective, still the placement of possessive labor's is wrong...how can an ADJ modify another ADJ...
I hope now you are clear why OP A is incorrect
For Op B, i use reason 1, as i was sure about the existence of ADJ "unqualified"..hence use of "unqualifying support" is wrong
For OP D, E:--- this is tricky
see the words "receive" and "are receiving" are VERBS...and the word CONSISTENT is an adjective and an adjective can be placed after verb..so here its correctly placed...moreover, "consistent and unqualified" are acting as ADJ and modifying NOUN "support" so everything seems correct then what's wrong??? well the use of "by labor" in these answer choices make them passive and less preferable over Op C which is clear and uses "consistently (ADV) received (V)" and "unqualified (ADJ)support(N)"....correctly
I hope you find my post helpful and if you find any flaw in my reasoning, then please comment.
@rohu thanks for the link, its always good to read Ron's post.
Thanks
Atul