Need to confirm if the verbs in the sentences are physical or mental actions:

1. Other Americans in the Olympics challenged their opponents, too. --physics
2. Wilma dazzled the crowds in the track & field competition. --physical
3. Al Oerter, an American discus thrower, dominated his event from 1956 to 1968.---physical
4. eight years later, American swimmer Mark Spitz achieved additional recognition for the US. ---physical

I agree.

To determine whether the verbs in the sentences are physical or mental actions, we need to understand the difference between physical and mental actions.

Physical actions refer to actions that involve bodily movements or the use of physical force, such as running, jumping, throwing, or swimming. On the other hand, mental actions are related to thinking, perceiving, or feeling, which do not involve physical movement.

Now let's analyze the sentences you provided:

1. "Other Americans in the Olympics challenged their opponents, too."
- In this sentence, the verb "challenged" is a physical action because it indicates that the Americans physically confronted or competed with their opponents.

2. "Wilma dazzled the crowds in the track & field competition."
- The verb "dazzled" in this sentence is also a physical action because it describes a physical activity that Wilma performed, which is to captivate or impress the crowds with her performance.

3. "Al Oerter, an American discus thrower, dominated his event from 1956 to 1968."
- The verb "dominated" in this sentence is a physical action because it suggests that Al Oerter physically exhibited his superiority and control over his event.

4. "Eight years later, American swimmer Mark Spitz achieved additional recognition for the US."
- In this sentence, the verb "achieved" is also a physical action as it implies that Mark Spitz physically accomplished something that led to his recognition.

In conclusion, the verbs in all the sentences are physical actions.