Question

1. according to the passage, the ideal environment in which the bacteria lactobacillus can thrive is an environment that

• is moisture deprived.
• is mostly water and salt.
• is rich in oxygen.

Explanation:

To determine the ideal environment for Lactobacillus, we recall that Lactobacillus is a lactic - acid - producing bacterium, often found in environments like fermented foods (e.g., yogurt, sauerkraut). These environments are typically aqueous and may have salt (for preservation in some cases, like pickling). Moisture - deprived environments are not suitable for most bacteria including Lactobacillus as they need water for metabolic processes. Lactobacillus is generally anaerobic or micro - aerobic, so a rich - oxygen environment is not ideal. An environment that is mostly water and salt (like brine - based fermentations or the liquid in yogurt) provides the necessary moisture, nutrients, and osmotic conditions for Lactobacillus to thrive.

Answer:

B. is mostly water and salt.