In the following question, out of the four alternatives, select the option that best expresses the meaning of the given idiom or phrase and mark your answer. To go to somebodys head.

Introduction / Context:
This is an idiom based question. The expression to go to somebodys head appears frequently in everyday English, often in relation to success, praise, power, or sometimes alcohol. The candidate must choose the option that captures the core figurative meaning of the idiom rather than a literal interpretation. Accurate understanding of such idioms is important for reading comprehension and spoken fluency.

Given Data / Assumptions:

• Idiom: to go to somebodys head.
• Options: have a huge ego, complain to the highest authority, make someone dizzy or slightly drunk, arrive at the central point of the topic.
• No specific sentence is provided, so the general meaning is tested.
• We consider the most common figurative sense used in exams.

Concept / Approach:
In standard idiomatic usage, if praise, power, fame, or success goes to a persons head, it means the person becomes proud, arrogant, or conceited. The individual starts to overestimate personal importance and develops a huge ego. While there is also a more literal use where strong drink goes to the head and makes someone feel dizzy, exam questions with no context usually target the figurative ego based meaning. Therefore, we must focus on changes in attitude and pride rather than physical effects.

Step-by-Step Solution:
Step 1: Recall typical sentences: Success went to his head, The sudden fame went to her head, and similar examples.Step 2: Understand that in these sentences the person becomes conceited, not dizzy, and starts behaving as if more important than others.Step 3: Compare this idea with option To have a huge ego, which matches the sense of inflated self importance.Step 4: Examine the other options. Complaining to the highest authority, feeling slightly drunk, or reaching the central point of a topic are unrelated to arrogance developed after success.Step 5: Conclude that the intended exam meaning is captured best by To have a huge ego.

Verification / Alternative check:
To verify, consider a short narrative: A young actor received awards early in his career and the sudden praise went to his head. Here, the natural interpretation is that he became arrogant and difficult, not that he became physically dizzy. Similarly, a manager may tell a promoted employee, Do not let this promotion go to your head, clearly warning against ego. Thus, in everyday and exam oriented usage, the idiom is strongly linked with ego and pride.

Why Other Options Are Wrong:
To complain to the highest authority: This describes a different idiom, go over somebodys head, which means to bypass a person and approach a superior authority. It is not the same as go to somebodys head. To make someone dizzy or slightly drunk: This is a literal physical effect of alcohol going to the head, but without context, competitive exams generally emphasise the figurative meaning related to arrogance. To arrive at the central point of the topic: This sounds like get to the point or get to the heart of the matter, which is another idiom entirely and does not match the given phrase.

Common Pitfalls:
Many students confuse go to somebodys head with go over somebodys head because both involve authority or hierarchy. Careful attention to prepositions and typical sentence patterns avoids this confusion. Another pitfall is to focus only on the literal idea of head and choose the dizziness related option, especially if one remembers alcohol related usage. In exam settings, however, unless alcohol is explicitly mentioned, the default interpretation is ego inflation after success or praise.

Final Answer:
The idiom to go to somebodys head means to have a huge ego or to become arrogant due to success or praise.