Yes, attempting mock tests under exam-like stress conditions occasionally can be beneficial for preparing for Economics Optional. Here's why:

1. Simulates real exam conditions:
- Mock tests conducted under exam-like stress conditions can simulate the actual exam environment, helping you become familiar with the pressure and time constraints of the real test.
- This can help you develop the necessary mental resilience and concentration required to perform well in the actual exam.

2. Enhances time management skills:
- Mock tests conducted under timed conditions can help you gauge your speed and efficiency in answering questions within the given time frame.
- By practicing under time constraints, you can learn to allocate your time wisely, prioritize questions, and improve your overall time management skills.

3. Identifies knowledge gaps:
- Attempting mock tests can help you identify your strengths and weaknesses in different topics of the Economics Optional syllabus.
- By reviewing your performance in these tests, you can pinpoint areas where you need to improve your understanding or revise more thoroughly.
- This can guide your study plan and allow you to focus on areas that require more attention.

4. Enhances exam-taking strategies:
- Regularly attempting mock tests can help you develop effective exam-taking strategies, such as identifying key words, interpreting questions accurately, and choosing the most appropriate approach to solve problems.
- By analyzing and understanding the solutions and explanations provided for each question, you can learn valuable techniques and strategies that can improve your performance in the actual exam.

5. Builds confidence:
- Mock tests conducted under exam-like stress conditions can help reduce anxiety and build confidence by familiarizing you with the exam format and difficulty level.
- As you become more comfortable with the exam environment through regular practice, you are likely to feel more confident and perform better in the actual exam.

Conclusion:
In conclusion, attempting mock tests under exam-like stress conditions occasionally can be a valuable tool in preparing for Economics Optional. It not only simulates the real exam environment but also enhances time management skills, identifies knowledge gaps, enhances exam-taking strategies, and builds confidence. By incorporating regular mock tests into your study plan, you can improve your overall preparedness and increase your chances of success in the Economics Optional exam.