## Core Concept
The classification of intelligence quotient (IQ) scores is based on a standard normal distribution, with a mean of 100 and a standard deviation of 15. IQ scores are used to categorize individuals into various levels of intelligence.

## Why the Correct Answer is Right
An IQ score of 98 is closest to the average or normal range of intelligence. Typically, IQ scores are classified as follows:
- Average or Normal Intelligence: 85-114
Given that 98 falls within this range, it is classified under Average or Normal Intelligence.

## Why Each Wrong Option is Incorrect
- **Option A:** This option is incorrect because it does not correspond to the classification of an IQ score of 98.
- **Option B:** This option is incorrect because, although it might seem close, an IQ of 98 does not classify as above average or very superior.
- **Option D:** This option is incorrect because an IQ of 98 is not considered borderline intellectual functioning or extremely low.

## Clinical Pearl / High-Yield Fact
A key point to remember is that the classification of IQ scores can slightly vary depending on the specific criteria used, but generally, an IQ of 85-114 is considered within the normal or average range.

## Correct Answer: B. Average or Normal Intelligence