Where are the A. B. C. D. answers so i can answer
Travelling is a great way of spending your time because it enrichens your personal experience. If you travel with a tourist agency (or even if you travel without one) you're helping the tourism of a certain area/country. With helping them, you're also creating more money for them which means they can invest more money into creating even more desirable touristic adventures. This circle can then be repeated multiple times :)
