Which of the following actions would best describe 'cowering'?

Cowering is a physical reaction often associated with fear or intimidation. It typically involves a person lowering their body, often by bending their knees and hunching over, as a way to make themselves appear smaller and less threatening. This behavior is instinctive and can occur in response to a perceived threat or danger. Therefore, crouching down in fear captures the essence of cowering accurately, as it reflects the body language associated with vulnerability and submission in the face of fear.

The other actions suggest confidence, aggression, or a proactive response to conflict, which do not align with the concept of cowering. Cowering is specifically about retreating from a threat, both physically and emotionally, rather than engaging or confronting it.