Question

which action is most helpful in preventing sexual involvement? bringing condoms \just in case\ voicing personal boundaries indicating that parents will be upset suggesting that it is not the right time for a dating relationship

Explanation:

Voicing personal boundaries helps in clearly communicating one's limits and intentions in a relationship, which can prevent premature sexual involvement. Bringing condoms "just in case" implies preparedness for sexual activity and doesn't prevent it. Indicating parents will be upset is an external - influence factor and not a direct preventive measure. Suggesting it's not the right time is a general statement but less effective than setting clear personal boundaries.

Answer:

voicing personal boundaries