Question

Why do liquids have to be poured into containers before they can be measured ? 1. It would spill if not in glass2. The container has numbers on it 3. Liquids do not have a definite shape

Answer 1

Liquids have to be poured into a container that is caliberated with measurements before it's volume can be measured because a liquid does not have a definite shape, it only takes the shape of the container which it is placed. So if the volume of the cotainer is known, that becomes the volume of the liquid.

Hence the answer is

Liquids do not have a definite shape, option 3