Explanation:

Let's look for the pattern:

- 42

- 54 (42 + 12)

- 66 (54 + 12)

- 78 (66 + 12)

- 90 (78 + 12)

- 100 (90 + 10)

Now, explain options:

- Option 1: 100

?? The jump here is only +10, not +12. Breaks the pattern. 

- Option 2: 90

90 comes after 78 (+12), fits the pattern.

- Option 3: 78

78 comes after 66 (+12), also fits.

- Option 4: 66

66 comes after 54 (+12), fits.

- Option 5: 42

First term, forms the base.

Correct Answer:

- Option 1 (100) breaks the pattern, as it should be 102.

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