Answer:
https://www.cnbc.com/2015/05/27/sensorwake-this-alarm-will-wake-you-up-with-the-smell-of-cash-or-croissants.html
Explanation:
The sentence <em>The cat ate the rat </em>contains a direct object.
<em>The cat </em>is the subject, <em>ate </em>is the verb, <em>the rat </em>is the direct object.
The answer is B an adjective