- The cat chased the mouse quietly.
- Quietly chased the cat the mouse.
- The mouse quietly chased the cat.
- Chased quietly the cat the mouse.
The correct sentence structure in English is Subject-Verb-Object-Adverb. The subject (the cat) should be followed by the verb (chased), then the object (the mouse), and finally, the adverb (quietly). The correct option (a) follows this structure.
