question: What sentence would provide a factual answer to this question: "The best time to have an all-day BBQ in the northern hemisphere is"

answer: the amount of daylight is greatest on the summer solstice

question: What sentence would provide a factual answer to this question: "Birds are a vehicle for spreading the seeds of what?"

answer: birds are a vehicle for spreading the seeds of a plant

question: What sentence would provide a factual answer to this question: "There are several stages in the way that water cycles, and all are accurate aside from"

answer:
condensation is a stage in the water cycle process