Final answer:
To get stuck means to encounter a problem or obstacle that hinders progress or smooth movement.
Step-by-step explanation:
In this context, the phrase 'to get stuck' means to encounter a problem or obstacle (option A).
For example, in sentence 1, the students voted against having makeup classes on Saturday, so they encountered the problem of having to find an alternative solution. In sentence 2, the speaker asked their little brother if he was hooked on video games, indicating a potential problem or concern. In sentence 3, the person approached someone standing by the door, and they started talking, which could have been disrupted or interrupted by a problem or obstacle.
Therefore, to get stuck means to encounter a problem or obstacle that hinders progress or smooth movement.