Ritesh1191
I always thought that "to+ root form of the verb" is used in such cases.
GMATNINJA, please come to the rescue.
Posted from my mobile deviceHey! I know I'm not GMATNINJA, but I am
a ninja, so I'll try to help. What you've said is true in most cases: if
to precedes a verb, that verb should generally be in the root form. Together, the
to and the root form of the verb make an infinitive. However, there are cases in which
to can and should instead precede the gerund form of the verb. Most such cases (including the one in question here) involve idioms. Consider, for instance, a common word such as
opposed. Opposed generally pairs with
to in idiomatic constructions (as in, for instance,
I'm not opposed to cats). In these cases,
to functions not as the
to in the first part of an infinitive but as a preposition that, like all functioning prepositions, must be followed by a noun. That's why if you want to put an action after the
to in such an idiomatic construction, you must use the gerund form of the verb (that is, a verb in its
-ing form used as a noun). For instance, it would be fair to say
I'm not opposed to eating there, and similarly it would be incorrect to say
I'm not opposed to eat there.How is all of this pertinent to the question at hand? In this case, the idiom is
contribution ... to, and again the
to is functioning as a classic preposition. You can tell this because the same idiomatic construction is also used for classic nouns (for instance,
I made a contribution to my favorite radio station.). Therefore, if you're going
contribute to some kind of action, the action itself needs to be in noun (gerund) form:
mitigating.As a side note, there
are several idiomatic constructions that call for an infinitive, such as
require someone to do something or
persuade someone to do something. Contribute/contributing just doesn't happen to be one of them.
I hope that helps until the real ninjas show up!