Which of the following is an example of artificial sweetner?

Options

A. Bithional
B. Alitame
C. Salvarsan
D. Lactose

Explanation

To determine which of the given options is an example of an artificial sweetener, we can analyze each option provided:

1. **Charops and Dewey** - This does not correspond to any known artificial sweetener.
2. **Bithynol** - This is not recognized as an artificial sweetener.
3. **Altam** - This is known to be an artificial sweetener. Specifically, it is a dipeptide composed of aspartic acid and phenylalanine, commonly referred to as aspartame.
4. **Selverson** - This does not correspond to any known artificial sweetener.
5. **Lactose** - This is a natural sugar found in milk and is not an artificial sweetener.

From the analysis, we can conclude that the correct answer is **Altam**.

### Step-by-Step Solution:
1. **Identify the options**: List out the options provided in the question.
2. **Research each option**: Check if each option is a known artificial sweetener.
3. **Evaluate the findings**:
- Charops and Dewey: Not an artificial sweetener.
- Bithynol: Not an artificial sweetener.
- Altam: Recognized as an artificial sweetener (aspartame).
- Selverson: Not an artificial sweetener.
- Lactose: A natural sugar, not an artificial sweetener.
4. **Select the correct option**: Based on the evaluation, select Altam as the correct answer.

### Final Answer:
**Altam** is an example of an artificial sweetener.