Question

__________ is used for propagation (more bacterial growth) of culture.
○ nutrient slant
○ nutrient broth
○ nutrient deep
○ nutrient agar

Explanation:

To determine the correct option, we analyze each choice:

• Nutrient slant (solid medium, slanted) is mainly for storage or short - term maintenance, not for large - scale propagation.
• Nutrient broth is a liquid medium. In a liquid environment, bacteria can move freely, have access to nutrients throughout the medium, and this promotes rapid growth and propagation of the bacterial culture.
• Nutrient deep (usually for anaerobic bacteria or specific tests) is not primarily for propagation.
• Nutrient agar is a solid medium, and bacterial growth on it is more about colony formation rather than large - scale propagation.

So, nutrient broth is used for the propagation (more bacterial growth) of culture.

Answer:

B. Nutrient broth