Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to recognize fear in cats [title] Understand that fear manifests itself physically in cats. [step] A fearful cat is in a state of physiological arousal. She has adrenaline, the fight-or-flight hormone, racing through her bloodstream.

Ending1: This physiological response causes cats to become aggressive. [title] Identify what you might be afraid of. Ending2: This response can manifest as the red blood cells of the cat attacking the source. Similarly, a fearful cat is in a state of progressive anaphylactic shock. Ending3: Alone, anxiety can lead to feelings of being extremely fearful. This suppresses the body's automatic response to fight impulses. Ending4: This stimulates the sympathetic nervous system to supply extra blood to her heart and muscles so that she is prepared for action. To spot signs of adrenaline, read the following steps.

Answer format: ending1/ending2/ending3/ending4