Jackson should research the typical salary range for assistant designer positions in his area and consider factors such as his level of education, skills, and the company's financial status. He should then provide a salary range that reflects this research rather than a fixed number.
For example, if the typical salary range for the position is between $40,000 and $50,000, he could respond with something like, "Based on my research and understanding of the market, I believe a salary range of $40,000 to $50,000 is appropriate for this position." This demonstrates that he understands the potential salary range and is open to negotiation.
From the given options, none directly reflect this approach. If he must choose one of the options listed, he should select the one that aligns best with his research. If none align, he should ideally communicate that he is open to discussing a salary that reflects his qualifications and the standard in the industry.