✅ The series follows a pattern where the increment between consecutive letters increases by 2 each time.

A (1st letter) + 2 = C (3rd letter)

C (3rd letter) + 4 = G (7th letter)

G (7th letter) + 6 = M (13th letter)

M (13th letter) + 8 = U (21st letter)

Following this pattern, the next increment should be +10. U (21st letter) + 10 = 31.

Since there are 26 letters in the alphabet, we wrap around: 31 - 26 = 5. The 5th letter of the alphabet is E.

❌ Option B (W) would imply a different increment or a miscalculation of the wrap-around.

❌ Option C (D) would result from a significant miscalculation of the increment or the position after wrap-around.

❌ Option D (Y) is an arbitrary choice and does not follow the established increasing even number increment pattern.

✅ The pattern in this series is an increase of 3 positions in the alphabet for each subsequent letter.

✅ C is the 3rd letter, F is the 6th letter (3+3), I is the 9th letter (6+3), and L is the 12th letter (9+3).

✅ Following this pattern, the next term should be 3 positions after L, which is the 15th letter of the alphabet, O (12+3).

❌ Option A (M) is the 13th letter, which is only 1 position after L, not following the established pattern.

❌ Option B (N) is the 14th letter, which is 2 positions after L, not adhering to the +3 pattern.

❌ Option D (P) is the 16th letter, which is 4 positions after L, thereby breaking the consistent +3 pattern of the series.

✅ This letter series is based on an increasing numerical difference that doubles with each step.

✅ Assigning numerical values to the letters (A=1, B=2, C=3, and so on): A(1), C(3), G(7), O(15).

✅ The differences between consecutive terms are: C-A = 3-1 = +2; G-C = 7-3 = +4; O-G = 15-7 = +8.

✅ Following this pattern (2, 4, 8), the next difference should be +16.

✅ Adding 16 to the last term's numerical value: 15 + 16 = 31. Since there are 26 letters in the alphabet, 31 - 26 = 5.

✅ The 5th letter of the alphabet is E.

❌ Option A (D) would result from a difference of +15, which does not follow the doubling pattern.

❌ Option C (F) would result from a difference of +17, also not adhering to the established pattern.

❌ Option D (G) is already present as the third term in the series, indicating a misunderstanding of sequence progression.

✅ The pattern in the series involves adding an increasing even number of letters to the previous term.

E to G is +2 letters; G to K is +4 letters; K to Q is +6 letters; Q to Y is +8 letters.

Following this sequence, the next step should be adding +10 letters to Y.

Counting 10 letters from Y (Y, Z, A, B, C, D, E, F, G, H, I) leads to 'I' as the next term, wrapping around the alphabet.

❌ Options A, C, and D do not follow the established +2, +4, +6, +8, +10 pattern in the letter progression.

✅ To solve this series, we convert each letter to its alphabetical position: F=6, H=8, K=11, O=15, T=20.

✅ Next, we find the difference between consecutive terms: H-F = 8-6 = +2; K-H = 11-8 = +3; O-K = 15-11 = +4; T-O = 20-15 = +5.

✅ The pattern of the differences is an increasing sequence: +2, +3, +4, +5.

✅ Following this pattern, the next difference should be +6, so the next term is T (20th letter) + 6 = 26th letter, which is Z.

❌ Option A (Y) would result if the jump remained +5 (20+5=25) instead of increasing to +6.

❌ Option C (A) is incorrect and does not follow the established numerical or alphabetical pattern.

❌ Option D (U) would result if the jump was only +1 (20+1=21), indicating a simple alphabetical progression or a miscalculation of the pattern.