True or False: The number of columns in a Bootstrap row is fixed regardless of the device.

The statement is false. In Bootstrap, the number of columns within a row is not fixed and can vary depending on the screen size or device being used. Bootstrap employs a responsive grid system that adjusts the layout based on the size of the viewport. For instance, a row can contain different numbers of columns on small screens (like mobile devices) compared to medium or large screens.

This flexibility is a core feature of Bootstrap, allowing developers to create designs that adapt to various devices, improving user experience. The grid system uses predefined classes that specify how many columns an element should occupy across different screen sizes, which is what makes it responsive. This means, on smaller devices, a row may contain one or two columns, while on larger devices, it might display a full set of columns, utilizing the available space efficiently.