Answer: The second answer because, the Earth's mantle is mainly a fluid, but sometimes a solid. It rises, but never sinks.
Hope his helped! <3
Ive done that lab, an acceptable response is just a hypothesis question. Make sure to have an if, then, and a because. If you add the question I will provide an answer.
Answer:
He could create a schedule, block the extra things they do that isn't necessary, or even take a few breaks. When you take a break you relax your mind, and when you do that you stress less so you can be more productive.
Hope this helps and have a great day!