Final answer:
The corrected statement with only one change from the inequality 5 > 2 < 1 is d. 5 < 2 > 1, as it arranges the numbers in a true comparative sequence.
Step-by-step explanation:
The student has asked which option makes only one change to the incorrect mathematical inequality 5 > 2 < 1 to make it a correct statement. To solve this, we need to find an option where the numbers are in a sequence that fits a true inequality. The correct answer to this is d. 5 < 2 > 1, as this rearranges the symbols to correctly indicate that 2 is greater than 1 but less than 5, making a true comparative statement.