Which device is most suitable for Jack's needs while traveling?

The most suitable device for Jack's needs while traveling is a tablet. Tablets are specifically designed to be lightweight and portable, making them convenient for travel. They typically offer a good balance of functionality and usability, allowing users to perform tasks such as browsing the internet, watching videos, and reading eBooks without the bulk associated with laptops. Tablets also feature long battery life, which is advantageous for travel where access to power outlets may be limited.

Smartphones, while portable, have smaller screens and may not provide the same experience for tasks such as reading or editing documents compared to tablets. Laptops are more powerful and versatile but can be cumbersome to carry around and may require more frequent charging. Desktop computers are not portable at all, making them impractical for anyone traveling. Therefore, a tablet stands out as the ideal option for someone looking for functionality combined with ease of transport during travels.