Read the passage and answer the question.
PASSAGE (P05): Many students use their phones for learning, but they must be cautious online. A message that promises a prize may be a scam designed to steal personal details. Teachers advise learners to verify links before clicking and to avoid sharing passwords. If something seems suspicious, it is wiser to ask an adult for guidance than to act quickly and regret it later.
In the passage, the word/phrase "cautious" most nearly means:
Select the ONE best answer from the options panel.