Which of the following words is closest in meaning to “Soporific”?

Soporific means tending to cause sleep; a sedative.

• Correct answer - sedative: it has the same meaning as Soporific.
• poignant: deeply moving - wrong, it does not mean the same as Soporific.
• noxious: harmful or poisonous - wrong, it does not mean the same as Soporific.
• inimical: hostile or harmful - wrong, it does not mean the same as Soporific.