The "tricks" to this question are:
1. Get the right verb tense for provide, eliminating A & B.
2. Look at what the sentence is saying. It's talking about providing support FOR (aka giving reasons for) doing something, not providing support TO someone who is classifying or TO the act of classification. This eliminates C & E.
Next, the idiomatic use of the word "support": in English, we say that one gives/shows support for something. That's natural and idiomatic. To say, "I give my support to something" sounds less natural, more like the kind of mistake someone learning English might make.
I agree with Mike that support for
is more common than support to
, but both "support for" and "support to" can be grammatical (e.g. "Hillary Clinton gave her support to the Obama campaign.").
I think Mike's point is also a bit confusing because he's using the words give
rather than the word in the question: provide
(1) The government provides financial support for Mapplethorpe's "art". <-- The gov gives money to Mapplethorpe to make his art.
(1a)*The government provides financial support to Mapplethorpe's "art". <-- They give money to the art? Ungrammatical!
(2) The government provides financial support to the homeless. <-- The gov gives money to homeless people.
(3) Iran provides support to the PLA. <-- Iran helps the PLA in some way.
(4)?Iran provides support for the PLA. <-- Iran helps the PLA, but in this sentence we really need a modifier like military
(5)?Iran gives support to the PLA. <-- Iran gives some sort of physical (tangible) help to the PLA. Probably OK without a modifier.
(6) Iran gives military support to the PLA. <-- Crystal clear.
Some might say that Sentence (5) could be better written as:
(5a) Iran supports the PLA.
but that may change the meaning of the sentence; supporting something/someone ("I support free speech.") and giving support to someone/thing ("Iraq gives support to al Qaeda.") aren't necessarily the same thing.
(5b) Iran supports the PLA financially.
would be great.
Please +1 KUDOS this post if you found it helpful! Thanks!