The character 选 primarily means "to choose" or "to select." It is commonly used when talking about making choices among options, such as selecting colors, majors, or winners in a competition.
When using 选, the object of selection usually follows directly after the verb. It can be used in both formal and informal contexts. Avoid confusing 选 with 挑 (tiāo), which often implies a more careful or picky selection. 选 is more neutral and general.
Practical Tip
In conversations, 选 is often paired with 从 (cóng) to indicate the range of options, e.g., 从...中选 (choose from...).