Final answer:
The correct translation of the given sentence is option D: Do you know if there will be a lot of people at the conference on renewable energy?
Step-by-step explanation:
Do you know if there will be a lot of people at the conference on renewable energy?
The correct translation of the given sentence is option D. The sentence is asking if the person knows whether there will be many people at the conference on renewable energy.
For example, if you want to ask someone if they know about the attendance at the conference, you can use this sentence: "¿Sabes si habrá mucha gente en la conferencia sobre energía renovable?"
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