The three beams on a triple beam balance all are different. Each beam should have a differnet unit of measurement. For example, one beam may count in 100's and the other beam may count in 10's and the last beam may count in 1's.
Weight we calculate using W= force multiplied to displacement
Mass SI unit is Kg
Weight SI unit is Newton (N)
Mass
It could be a tide pool but this is pretty vague
B. a circle graph
circle graphs are the best to show percentages because they’re very easy to look at and get info from