Explanation:

- "Determined" means having a firm decision or being resolute in purpose. Someone who is determined is committed and unwavering.

- Option 1: Disillusioned

- Means feeling disappointed and losing belief or trust.

- Not similar to determined. It implies a negative change in perspective.

- Option 2: Resolute

- Means firm, unwavering, and having a strong purpose.

- This is synonymous with determined, as both reflect a strong commitment and firmness.

- Option 3: Inspired

- Means being filled with the urge or ability to do something creative.

- Different from determined, which is more about persistence and resolve.

- Option 4: Intense

- Means having or showing strong emotions or force.

- Not directly synonymous with determined, as it reflects depth of feeling rather than resolve.