Answer:A, B, And C good luck!!!!!
Explanation:
IM NOT SURE BUT I THINK SHE ASKING HOW TALL IS THE BBUILDING KNOWING THAT EACH FLOOR IS 1m AND SHE RECORDING THE TIME FROM EACH FLOOR THE BALL IS DROPPING SO SHES TRYING TO FIGURE OUT HOW TALL IS THE BUILDING
Ummm okay here’s a link to that answers https://app.bitly.com/Bl4mcMEfZEJ/bitlinks/