选C
这四个词意思都是：方法.
approach,后接to(the approach to the question)
way,后接in(He did this in this way. )
means,(单复数同型)后接of(He went to school by means of taking a bus) 
method,后接with(He earns money with the method of stealing money)
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望采纳,谢谢!请问那个method您说后接with，可是在您举得例子中method后接的是of啊打错了，不是后面用with，而是method一般是以with the method of这个词组形式出现。