To say "with me" in Spanish, you would use the phrase "conmigo." In the given options, "conmigo" is the correct choice.
Here's a breakdown of the options:
1. conmigo - Correct answer, meaning "with me" in Spanish.
2. con yo - Incorrect. "Yo" means "I," so this option is not the correct way to say "with me."
3. contigo - This means "with you" in Spanish, not "with me."
4. con tú - This translates to "with you" as well, not "with me."
So, the correct way to say "with me" in Spanish is "conmigo."