This question consists of a pair of words which have a certain relationship to each other. Select the pair which does NOT have the same relationship.
Allure : Repulse
1) Creation : Destruction
2) Fluctuate : Stabilize
3) Immense : Huge
4) Notion : Reality

Given: Allure : Repulse

Allure means to attract or entice, Repulse means to drive away or disgust.

These words are opposites (antonyms).

Now, we check each options.

1) Creation : Destruction (Same)

Creation means bringing something into existence.

Destruction means tearing something down.

2): Fluctuate : Stabilize (Same)​

Fluctuate means to change or vary.

Stabilize means to remain steady.

3): Immense : Huge (Not Same)​

Immense and huge both mean very large.

4): Notion : Reality (Same)​

Notion refers to an idea or belief.

Reality refers to actual existence.

These can be seen as contrasting but not strict opposites.

Thus, correct option is (b).