Fill in the following blanks with suitable words:
g) In humans , one mature egg (or ovum) is released into oviduct every ……….. By one of the ovaries.

Options

A. year
B. day
C. month
D. second

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for a suitable word to fill in the blank regarding the release of a mature egg (or ovum) in humans.

2. **Identifying Key Terms**: The key terms in the question are "mature egg (or ovum)," "released," "oviduct," and "ovaries."

3. **Recalling Biological Processes**: In humans, the female reproductive system includes the ovaries, which are responsible for producing eggs. Each month, during the menstrual cycle, one mature egg is typically released from one of the ovaries.

4. **Considering the Options**: The options provided are "year," "day," "month," and "second." We need to determine which of these options correctly describes the frequency of egg release.

5. **Analyzing the Menstrual Cycle**: The menstrual cycle in human females generally lasts about 28 days, during which one ovum is released approximately every month.

6. **Choosing the Correct Answer**: Based on the understanding of the menstrual cycle, the correct word to fill in the blank is "month."

7. **Final Answer**: In humans, one mature egg (or ovum) is released into the oviduct every **month** by one of the ovaries.

---