question: What sentence would provide a factual answer to this question: "The tree trunk is what holds up the"

answer: a stem is a source of support for a plant

question: What sentence would provide a factual answer to this question: "Which of the following would be the most impactful to an ecosystem?"

answer: natural events usually cause changes to Earth 's surface

question: What sentence would provide a factual answer to this question: "With proper nutrition, which activity would increase the body's strength?"

answer:
exercise has a positive impact on a body 's strength