How Does Tuberculosis Progress from Latent to Active

question 19

Multiple Choice

How does tuberculosis progress from latent to active?

• A) The infection droplets (bacilli) escape encapsulation and begin producing symptoms.
• B) The purified protein derivative (PPD) test turns positive.
• C) It becomes active when an infected person coughs or sneezes.
• D) The patient ' s sputum turns bloody.

---

Definitions:

Profit-maximizing Output

This is the level of production at which a firm achieves the highest possible profit, determined by the point where marginal cost equals marginal revenue.

Total Cost

The complete cost of production, including both fixed and variable costs, incurred by a business in producing its goods or services.

Marginal Cost

The increase in total cost that arises from producing an additional unit of output.

Lawn-mowing

The act of cutting the grass in a garden or lawn to maintain its appearance and health.