The best answer here is choice B. We can determine this because of the tense used throughout the passage itself. Bearing this in mind, choice B matches the tense perfectly.
Choice A does not work at all because the verb "am" makes no sense in the context of the sentence. The same is true for choice C. The passage is not in present tense, so it cannot be this choice. Choice D could make sense, except that this is in the future tense versus the past tense.
B sounds like the logical answer (I might be wrong though )
The best way to prevent tooth decay in children is to: C. Use natural sugars such as maple syrup, rather than refined sugars. Hope that helps.
Answer:
The direct object would be 'Sunglasses' (choice b)
