Select the most appropriate option to fill in the blank.
When the news of the Covid vaccine came, everybody in the house was _______.

* Excited: Feeling or showing happiness and enthusiasm. In the context of positive news like a vaccine, people would feel happy and enthusiastic.
Eager/Keen: Require a following preposition or infinitive to complete the meaning (e.g., eager to know, keen on going).

Rowdy: Noisy and disorderly, which does not fit the context appropriately.