Step-by-step Solution:

Correct Answer: A (24)

The solution is found by identifying the pattern in the sequence. The rule is to multiply the previous number by 2, and then alternately subtract 1 and add 1.

Let's check the sequence with this pattern:

• The first term is 12.
• The next term should be (12 × 2) - 1 = 24 - 1 = 23. The sequence has 24, which is where the error occurs.

If we assume the term was 23, the rest of the sequence follows the pattern correctly:

• 23 × 2 + 1 = 46 + 1 = 47 (Correct)
• 47 × 2 - 1 = 94 - 1 = 93 (Correct)
• 93 × 2 + 1 = 186 + 1 = 187 (Correct)
• 187 × 2 - 1 = 374 - 1 = 373 (Correct)
• 373 × 2 + 1 = 746 + 1 = 747 (Correct)

The pattern holds for the entire sequence if the second term is 23. Therefore, 24 is the wrong term.