What does "bolster" signify?

The term "bolster" signifies the act of supporting or strengthening something. When you bolster an argument, for example, you provide additional evidence or reasoning that enhances its validity. This word conveys a sense of encouragement or reinforcement, implying that whatever is being bolstered is made stronger or more effective through this support. The concept is often applied in various contexts, such as bolstering a relationship through communication or bolstering one's confidence through positive affirmation.

In contrast, the other options convey entirely different meanings that do not relate to the idea of support or strength. Criticizing severely, creating confusion, and decreasing quantity all point toward actions that weaken or undermine rather than support or strengthen. Therefore, the most accurate understanding of "bolster" aligns with the idea of enhancing and fortifying.