Answer:
The best definition of the underlined word as it is used in the sentence is "deserving praise; admirable"
Step-by-step explanation:
The word "laudable" as it is defined by any English dictionary refers to a plausible act from anyone, then the words that represent a synonym to this definition are deserving praise and admirable since they show that the action is a very positive and worthy one that everyone has known about and congrats the person for doing it, this can also cause admiration for the person who did the action.