Explanation:

- The word "rely" typically means to trust or depend on someone or something for support or help.

- Option 1: Depend

- This is directly synonymous with "rely."

- Both imply placing trust or confidence in someone or something.

- Correct Answer

- Option 2: Protect

- This means to keep safe from harm or injury.

- It is more about providing security, not reliance.

- Option 3: Ignore

- This means to refuse to take notice of or acknowledge.

- It's the opposite of relying, as you dismiss rather than depend.

- Option 4: Doubt

- This means to feel uncertain about something.

- It implies lack of trust or confidence, quite the opposite of "rely."