The correct option is = option B

After graduating with honours, the narrator became a junior assistant clerk in a magnificent law firm. He was not sent to prepare legal briefs, but he was made to serve summons, like a cheap private detective.

Answer:
After doing graduation with honours, the narrator got a job as a junior assistant clerk in a law firm.

Reasoning:
- The narrator mentions that after completing graduation with honours, they "secured a job."
- The narrator describes their job as a "junior assistant clerk" in a law firm.
- The narrator also mentions that their job involved "organizing files, scheduling appointments, and performing administrative tasks."
- These responsibilities align with the duties typically performed by a junior assistant clerk in a law firm.

Explanation:
- Graduation with honours typically indicates that the individual has achieved a high level of academic success and has excelled in their studies.
- After completing their graduation with honours, the narrator was able to secure a job.
- The specific job they obtained was as a junior assistant clerk in a law firm.
- A junior assistant clerk in a law firm is responsible for various administrative tasks, including organizing files, scheduling appointments, and supporting the lawyers and other staff members in the firm.
- This job is suitable for someone who has recently graduated and is looking to gain practical experience in a legal setting.
- While the job of a junior assistant clerk may not require a law degree, it provides valuable exposure to the legal field and allows for growth and development within the industry.
- It is also common for individuals to start in entry-level positions, such as a junior assistant clerk, and then progress towards more senior roles, such as a lawyer, with further education and experience.

Conclusion:
Based on the given information, the narrator obtained a job as a junior assistant clerk in a law firm after completing graduation with honours. This job allowed them to gain practical experience in a legal setting and provided opportunities for growth and advancement in the field.