Final answer:
The phrase 'He stole her thunder' means that he overshadowed someone else and took credit for her achievements. The correct option is 1.
Step-by-step explanation:
The phrase 'He stole her thunder' means that he took credit for her achievements. This expression is often used to describe a situation where one person receives the attention or praise that should have been directed towards another person, usually because they have done something more noticeable or dramatic.
It's as if one person has overshadowed another's moment in the spotlight, much like a thunderous noise would drown out other sounds. The correct option is 1.