Final answer:
The phrase 'beads of sweat danced across his brow' suggests the character is experiencing physical exertion, stress, or intense emotion, with the personification of sweat 'dancing' creating dynamic and somewhat chaotic imagery.
Step-by-step explanation:
The phrase "beads of sweat danced across his brow" provides a vivid descriptive detail that conveys a significant amount of information to the reader. It suggests that the character is in a state of physical exertion, stress, or high emotion, causing them to sweat. The imagery of beads of sweat 'dancing' introduces a dynamic visual that emphasizes movement, potentially alluding to the intensity of the character's situation or feelings. Moreover, the personification of sweat 'dancing' casts an almost lively or chaotic atmosphere to the character's state of being at that moment.