What are the other constraints on designing this solution to an urgent real world problem?

b is the best answer for this question.

you need more balloons

instead of copying and pasting things off of tests or work done on computer which im sure you did, try and read over the question carefully

fossil's are like over rated rocks like low key not gonna lie i don't get why we can't just call them old rocks like for real i mean i call my grandpa and grandma that smh