From the given options, select the pair of words which carries the same relationship to the given pair of words:

Plant : Photosynthesis

Human : Respiration

Here's why:

Plant : Photosynthesis describes a natural process vital for plant life. Photosynthesis enables plants to convert sunlight, water, and carbon dioxide into energy (glucose) and oxygen. It's fundamental for their survival and growth.

Human : Respiration similarly describes a natural process essential for human life. Respiration allows humans to convert oxygen and glucose into energy (ATP) and carbon dioxide. It's crucial for our cells to function and sustain life.

Both pairs highlight the relationship between a living organism and its essential biological process that supports its basic needs and survival.