Hormones are `:-`

Options

A. Produced in low amount
B. Easily diffusable
C. Non-antigenic
D. All

Answer

### Step-by-Step Solution:

1. **Definition of Hormones**: Hormones are chemical messengers produced by the endocrine glands. They play a crucial role in regulating various physiological processes in the body.

2. **Production in Low Amount**: Hormones are produced in very small quantities. Despite their low concentration, they have significant effects on the target organs. This statement is correct.

3. **Easily Diffusible**: Hormones can easily diffuse into the bloodstream. This allows them to travel throughout the body and reach their target organs quickly. This statement is also correct.

4. **Non-Antigenic**: Hormones are considered non-antigenic, meaning that they do not provoke an immune response or the formation of antibodies against them. This statement is correct as well.

5. **Conclusion**: Since all the statements provided in the options are correct regarding hormones, the correct answer is that all options are true.

### Final Answer:
All the given statements about hormones are correct.

---