Option C, 'Before you start to bake, decide what to make,' is the best example of alliteration.
Alliteration is the repetition of the same initial sound in multiple words in close proximity. In the given options, option C, 'Before you start to bake, decide what to make,' is the best example of alliteration as it repeats the 'b' sound in 'bake' and 'before'.
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