In general, prenatal care involves which of the following?

Evaluate the second option: 'Regular medical check-ups to monitor the health of the mother and fetus.' This is a key component of prenatal care. Regular check-ups help track the progress of the pregnancy, detect any complications early, and provide necessary interventions.

Evaluate the third option: 'Avoiding all forms of physical activity.' This is incorrect. Moderate physical activity, as recommended by a healthcare provider, is generally beneficial during pregnancy unless there are specific medical contraindications.