Electroporation procedure involves:

Options

A. fast passage of food through sieve pores in phloem elements with the help of electric stimulation
B. opening of stomatal pores during night by artificial light
C. making transient proes in the cell membrane to introduce gene constructs
D. purification of saline water with the help of a membrane system

Answer

### Step-by-Step Solution:

1. **Understanding Electroporation**:
- Electroporation is a technique used to introduce foreign DNA into cells by creating temporary pores in the cell membrane. This method allows for the uptake of genetic material without the use of vectors.

2. **Analyzing the Options**:
- **Option A**: Fast passage of food through sieve pores in phloem elements with the help of electric stimulation.
- This option is incorrect as it describes a process related to plant physiology, not electroporation.

- **Option B**: Opening of stomatal pores during night by artificial light.
- This option is also incorrect as it pertains to plant stomata and their behavior, not related to electroporation.

- **Option C**: Making transient pores in the cell membrane to introduce gene constructs.
- This option accurately describes the process of electroporation, as it involves creating temporary pores in the cell membrane to facilitate the introduction of DNA.

- **Option D**: Purification of saline water with the help of a membrane system.
- This option is incorrect as it relates to water purification techniques, not electroporation.

3. **Conclusion**:
- After evaluating all the options, the correct answer is **Option C**: Making transient pores in the cell membrane to introduce gene constructs.