Fill in the blank with an appropriate Modal from the options:
One ________ abide by the laws.
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → must
Complete sentence: One must abide by the laws. Laws are not optional. Obeying them is a duty for everyone.
| Option | Meaning and use | Example |
|---|---|---|
| (1) must (answer) | Must expresses strong obligation or necessity, something that has to be done. To abide by means to obey or follow a rule. | Drivers must stop at a red light. |
| (2) need | As a modal, need is used only in negatives and questions ("One need not worry", "Need I come?"). "One need abide" is ungrammatical. | – |
| (3) may | May expresses permission or possibility. Obeying the law is not left to choice or chance. | – |
| (4) could | Could expresses past ability or a polite possibility. It removes the sense of duty. | – |