Concept:The question tests the ability to identify the word closest in meaning to the underlined word "obstinate" as used in the sentence.
Explanation:In the sentence, the word "obstinate" is used to describe a boy who is difficult to manage or control.
An obstinate person refuses to change his opinion, action, or behaviour even when persuaded by others.
This shows that the boy is unyielding, determined to do things his own way, and resistant to advice.
In everyday usage, an obstinate child is often described as hardheaded or unmanageable.
Among the options given, the word "stubborn" (option B) carries exactly this meaning: being unwilling to change one's mind or attitude.
"Stubborn" is therefore nearest in meaning to "obstinate."
The other options do not fit the context: "proud" means feeling superior to others, "careless" means lacking attention or care, and "rude" means impolite or disrespectful.
These words do not describe the boy's unwillingness to change, so they are incorrect.
Answer:B. stubborn