Step 1: Understanding types of tourists.
Tourists are classified based on their travel destination. Those traveling within their own country are domestic tourists, while those traveling abroad are international tourists.
Step 2: Analyzing the options.
(A) International tourists: Correct. International tourists are people who travel to a country other than their home country.
(B) Domestic tourists: Incorrect. Domestic tourists are individuals who travel within their own country.
(C) Guests: Incorrect. While tourists can be guests, the term "guests" is more general and doesn't specifically refer to international travelers.
(D) Visitors: Incorrect. Visitors can be both domestic and international, but the term is not as specific as "international tourists."
Step 3: Conclusion.
Therefore, the correct answer is (A) International tourists, as they travel to countries other than the one in which they live.
Final Answer: International tourists.