A scientist is investigating a cell under a microscope. The scientist sees the cell take in food and oxygen. Over time, the cell gets larger in size and
changes shape slightly.
Which statement BEST shows how this evidence supports the claim that a cell is a living thing?
A All living things must drink water and take in oxygen.
B All living things must obtain energy and grow.
C All living things must contain DNA and move around to get food.
D All living things must breathe oxygen and grow and develop.