3 is the answer
Beaker A, with Rose syrup has the least space for water to occupy. So, it will overflow within a short time.
Beaker B, with stones is not so tightly packed and has more space than the beaker C (sand) and will take more time to fill.
Beaker C with sand is tightly packed and will take more time than Beaker A, Rose syrup.
Beaker D, has the most space to fill water and will take more time to overflow.