The correct answer is 'must'. 'Must' expresses strong obligation or necessity, often from the speaker's authority or rules. Example: 'You must wear a seatbelt while driving.' Other modals: 'have to' also expresses obligation but often from external rules (e.g., 'I have to pay taxes'), 'should' gives advice (e.g., 'You should exercise regularly'), and 'may' indicates permission. Understanding obligation modals is key for following instructions and rules.

Break down complex topics into smaller, manageable chunks for easier recall.

Zambia

• ivwananji siwale – 29 pts

• Distance of A Straight Line
• Mid-point of A Line
• Equation of a Straight Line
• Parallel and Perpendicular Lines
• COMMUNICATION SYSTEMS