Here are the odd ones out from each set:

1. **c. physical** - This is an adjective describing a state or condition, while the others are related to actions or roles.

2. **a. optimistic** - This is an adjective describing a feeling or attitude, while the others are nouns (priority, assignment, distraction).

3. **c. mental** - This is an adjective, while the others (balance, maintain) are verbs.

4. **c. communicate** - This is an action verb, while the others are related to mental processes or focus (recognize, concentrate).

5. **b. anxiety** - This is a noun representing a feeling, while the others are related to achievement or management practices (accomplish, well-balanced, management).

So, each listed odd one out is determined based on their grammatical function or category.