Why is water displacement an effective way of measuring the volume of an irregular solid?

Question 1 options:

Water displacement is effective when the solid has an irregular shape because there is always a simple formula for measuring volume.

Water displacement is effective when the solid has an irregular shape because there is no simple formula for measuring volume.

Water displacement is effective when the solid has an irregular shape because there is only one formula for measuring mass.

Water displacement is effective because all irregular shapes can be easily measured.

Water displacement is effective when the solid has an irregular shape because there is no simple formula for measuring volume.

Water displacement is effective when the solid has an irregular shape because there is no simple formula for measuring volume.