Is the following sentence grammatical?
An example could help clarify the problem.
I hear the construction help clarify quite often, is it idiomatic?
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The usage of help here is as a transitive verb, with the meaning "To contribute in some way to."
Help + verb is a common combination.
Doctors are finding one way that sugar can benefit your health: it may help heal wounds when antibiotics fail.
New mammogram guidelines could help catch breast cancer early.