Assertion :- Golgi apparatus remains in close association with endoplasmic reticulum .
Reason:- Materials to be packaged in the form of vesicles from ER fuse with cis face of the golgi apparatus and move towards maturing face.

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is False
D. If both Assertion & Reason are false.

Answer

To solve the question, we need to analyze the assertion and reason provided.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Golgi apparatus remains in close association with endoplasmic reticulum."
- This is true because the Golgi apparatus is functionally connected to the endoplasmic reticulum (ER). They work together in the processing and transport of proteins and lipids.

2. **Understanding the Reason**:
- The reason states that "Materials to be packaged in the form of vesicles from ER fuse with the cis face of the Golgi apparatus and move towards the maturing face."
- This is also true. The Golgi apparatus receives vesicles containing materials from the ER at its cis face, where processing occurs, and then these materials are transported to the trans face.

3. **Linking the Assertion and Reason**:
- The reason explains how the Golgi apparatus is associated with the ER. The vesicles that bud off from the ER are essential for the Golgi's function, as they provide the materials that need to be processed and packaged.

4. **Evaluating the Options**:
- We need to determine if both the assertion and reason are true and if the reason correctly explains the assertion.
- Since the reason provides a clear explanation of why the Golgi apparatus is associated with the ER, we conclude that both statements are true and the reason is the correct explanation of the assertion.

5. **Final Conclusion**:
- Therefore, the correct answer is: **Both assertion and reason are true, and the reason is the correct explanation of the assertion**.