Explanation:

- Correct Option: 3, Proficient

- Proficient means having a high degree of skill or competence in a particular area. It implies being well-versed or skilled, which is essential for a translator.

- Your answer is right

- Option 1: Deficient

- Deficient implies lacking in some necessary quality or element. This would not fit the context of getting a lucrative job.

- Option 2: Sufficient

- Sufficient means adequate or enough to meet the needs. While it might work in some contexts, it doesn't convey the level of skill implied by the job being lucrative.

- Option 4: Efficient

- Efficient refers to being able to accomplish a task with minimal waste of time and resources. It doesn’t specifically address language skill level.

Each option offers a different meaning, but "proficient" is the most fitting for a job requiring language skills.