Select the Sequence That Indicates the Steps That Occur in the Chain

question 5

Multiple Choice

Select the sequence that indicates the steps that occur in the chain of infection.
1) Transmission.
2) Susceptible host.
3) Reservoir of infectious agent.
4) Portal of exit.
5) Portal of entry.

• A) 3, 4, 1, 5, 2
• B) 2, 3, 5, 4, 1
• C) 1, 2, 3, 4, 5
• D) 5, 3, 1, 2, 4
• E) 3, 2, 1, 5, 4

---

Definitions:

Total Variable Costs

The sum of all costs that vary with the level of output, including materials, labor, and other expenses that increase or decrease as production changes.

Natural Monopoly

A market condition where due to high fixed costs or unique resources, a single company can supply a product or service at a lower cost than any potential competitor, thus dominating the market.

Unit Costs

The price a business incurs for the production, storage, and distribution of a single unit of a certain product or service.

Minimum Efficient Scale

The smallest amount of production a company can achieve while still taking full advantage of economies of scale regarding costs per unit of output.