Final answer:
Light is not required for yeast growth; yeast can thrive without it. Food, heat, and moisture are necessary for yeast to grow and ferment, which is used in bread and beer making.
Step-by-step explanation:
The element not required to make yeast grow is C. Light. Yeast, being a type of fungus, thrives in environments that are moist, slightly acidic, and can grow without the need for light. They are capable of growing in dark places as well as places exposed to light. The essential factors for yeast growth are food (usually in the form of sugars), warmth, and moisture. These conditions allow yeast to reproduce and carry out fermentation processes that are useful in bread and beer making. Light does not significantly contribute to their growth or reproduction, making it not a requirement for yeast cultivation.