Ideal contraceptives for the females who wants to delay pregnancy.

Answer

To determine the ideal contraceptives for females who want to delay pregnancy, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Contraceptives**:
- Contraceptives are methods or devices used to prevent pregnancy by avoiding fertilization. They work by preventing the sperm and ovum from meeting.

2. **Identifying the Need**:
- The question specifies that the female wants to delay pregnancy, which means she is looking for effective contraceptive methods that can help her avoid conception for a certain period.

3. **Types of Contraceptives**:
- There are various types of contraceptives available, including barrier methods, hormonal methods, and intrauterine devices (IUDs).

4. **Focusing on IUDs**:
- Among the various contraceptive methods, intrauterine devices (IUDs) are considered ideal for females who wish to delay pregnancy. They are inserted into the uterus and can provide long-term contraception.

5. **Types of IUDs**:
- **Copper-Releasing IUDs**: These release copper ions that suppress sperm motility, preventing fertilization.
- **Hormone-Releasing IUDs**: These release hormones that make the uterine lining unsuitable for implantation and create a hostile environment for sperm.
- **Non-Medicated IUDs**: These increase the phagocytosis of sperm, thereby reducing the chances of fertilization.

6. **Conclusion**:
- Based on the effectiveness and mechanism of action, the ideal contraceptives for females looking to delay pregnancy are the intrauterine devices (IUDs), particularly the copper-releasing and hormone-releasing types.