Select the combination of letters that when sequentially placed in the blanks will create a logical pattern.

abc _ _d cde d_ _ e_b

Given: abc _ _d cde d_ _ e_b

Let's analyze all the options:

(a) b; c; e; a; a  (Pattern Follow)

Filling the blanks:

Sequence: abc / bcd / cde / dea / eab

(a+1 = b, b+1 = c, c+1 = d)

bcd → cde (same +1 shift)

cde → dea (c+1 = d, d+1 = e, e+1 = f, but here it's a → wrap-around)

dea → eab (d+1 = e, e+1 = f, a expected next → sequence loops back)

(b) c; d; e; a; c  (Pattern Not Follow)​

Filling the blanks:
Sequence: abc / cdd / cde / dea / ecb
(c) b; c; e; a; c  (Pattern Not Follow)​

Filling the blanks:
Sequence: abc / bcd / cde / dea / ecb​
(d) d; e; a; b; c  (Pattern Not Follow)​

Filling the blanks:
Sequence: abc / ded / cde / dab / ecb

Thus, the correct option is (a) b; c; e; a; a
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