Fill up the blanks in the following paragraph by selecting the correct option
A. `overset("i")("___")` methods work on the principle of avoiding chances of ovum and sperms meeting
B. `overset("ii")("___")` is one such method in which the couples avoid coitus from day 10 to 17 of the menstrual cycle
C. `overset("iii")("___")` is another method in which the male partner withdraws his penis from the vagina just before ejaculation so as to avoid insemination
D. `overset("iv")("___")` method is based on the fact that ovulation and therefore the cycle do not occur during the period of intense loctation following parturition.

Options

A. `{:(" (i) (ii) (iii) (iv)"),("Barrier Coitus interruptus Periodic abstinence Lactational amenorrhea"):}`
B. `{:(" (i) (ii) (iii) (iv)"),("IUDs Lactational amenorrhea Coitus interruptus Periodic abstinence "):}`
C. `{:(" (i) (ii) (iii) (iv)"),("Natural Periodic abstinence Coitus interruptus Lactational amenorrhea "):}`
D. `{:(" (i) (ii) (iii) (iv)"),("Surgical Periodic abstinence Coitus interruptus Lactational amenorrhea "):}`

Answer

To fill in the blanks in the provided paragraph, we will identify the correct terms based on the principles of reproductive health discussed in the video transcript.

### Step-by-Step Solution:

1. **Identify the first blank (i)**:
- The statement mentions methods that work on the principle of avoiding the meeting of ovum and sperm. This describes a type of contraception that does not involve any artificial means.
- **Answer**: Natural

2. **Identify the second blank (ii)**:
- The statement refers to a method where couples avoid coitus from day 10 to 17 of the menstrual cycle. This period is crucial because ovulation typically occurs around day 14, and avoiding intercourse during this time helps prevent fertilization.
- **Answer**: Periodic abstinence

3. **Identify the third blank (iii)**:
- The statement describes a method where the male partner withdraws his penis from the vagina just before ejaculation to prevent insemination. This is a common method of contraception.
- **Answer**: Coitus interruptus

4. **Identify the fourth blank (iv)**:
- The statement refers to a method based on the absence of ovulation during intense lactation following childbirth. This method relies on the natural hormonal changes that occur during breastfeeding.
- **Answer**: Lactational amenorrhea

### Final Filled Paragraph:
A. **Natural** methods work on the principle of avoiding chances of ovum and sperms meeting.
B. **Periodic abstinence** is one such method in which the couples avoid coitus from day 10 to 17 of the menstrual cycle.
C. **Coitus interruptus** is another method in which the male partner withdraws his penis from the vagina just before ejaculation so as to avoid insemination.
D. **Lactational amenorrhea** method is based on the fact that ovulation and therefore the cycle do not occur during the period of intense lactation following parturition.