Identify the key element of a given tone.
A tone of optimism
The key element of a tone of optimism is a positive outlook and an expectation of good outcomes.
Complete the following task based on the instruction and optional input provided.### Instruction:
Identify the key element of a given tone.

### Input:
A tone of optimism

### Output:
The key element of a tone of optimism is a positive outlook and an expectation of good outcomes.