Final answer:
A travel photographer's full-time earnings can vary, but option b ($40,000 to $50,000 per year) is the most appropriate estimate. It's important to consider factors such as experience and demand.
Step-by-step explanation:
A travel photographer's full-time earnings can vary depending on various factors such as experience, demand, and location. However, based on the given options, the most appropriate estimate for the full-time earnings of a travel photographer would be $40,000 to $50,000 per year (option b).
Travel photography can be a rewarding career, but it often requires building a strong portfolio, establishing connections in the industry, and continuously seeking new opportunities. It's important to note that these earnings are estimates and individual results may vary.
To increase earning potential, a travel photographer can also explore additional streams of income such as selling prints, licensing images, or offering photography workshops.