Jim, John, and Jan are fifth-grade students with learning disabilities. Which of the following statements best illustrates the concept of intraindividual differences?

Jim does well with reading, but not math.

John has a high IQ score, but low achievement in spelling.

In comparison to the non-disabled students in her class, Jan scores lower in reading and math.

John has problems with math, Jan has problems with writing, and Jim has problems with reading.

The statement that best illustrates the concept of intraindividual differences is:

John has problems with math, Jan has problems with writing, and Jim has problems with reading.

This statement highlights the fact that each student has their own unique set of difficulties and strengths, which is a key aspect of intraindividual differences.