Question

Which of these is an example of scientific work done?

(a)Standing with a load of 2kg on the head for 5 minutes

(b)Playing video games when sitting on a sofa

(c) Sitting on a chair and reading a book

(d) Climbing stairs of a bridge​

Answer 1

D- CLIMBING STAIRS OF A BRIDGE

Answer 2

D is your answer.
Climbing stairs of a bridge