Plants, people, and flatworms share a common characteristic. identify that characteristics from the choices blow.

a) they all use cellular respiration to obtain energy.
b) they all make their own food.
c) they all use photosynthesis to obtain energy.
d) they all ingest food.

The correct answer is option A.

Explanation:

Cellular respiration uses food to create ATP fuel which is used for energy by the cells. Generally, during this process utilize the oxygen that is referred to as aerobic respiration.

It has 4 different phases known as glycolysis, Link reaction, the citric acid cycle, and the e⁻  transport chain.

It is the process that common in plants, people and flatworms to obtain energy.

Thus, the correct answer is option A.

both anaerobic and aerobic respiration use glucose (or other carbohydrates), proteins and lipids to produce atp and nadh. cell uses those energy molecules, obtained from food and   breaks them down during the chemical reactions of respiration. in anaerobic respiration, nadh is regenerated to nad+ by enzymes lactate dehydrogenase (lactate is produced, e.g. in muscle cells) or by alcohol dehydrogenase where ethanol is produced (alcohol fermentation), while in aerobic respiration, electrons from nadh are deposited in the mitochondria to regenerate nad+ (electron transport chain. anaerobic respiration produces 2 atp per molecule of glucose compared to aerobic respiration where about 38 atp molecules are produced.