In the following questions, d_e_ f_ 12g_16h_20i_24

Given series:

d _ e _ f _ 12 g _ 16 h _ 20 i _ 24

We need to fill the blanks sequentially.

Observe the pattern carefully.

Letters Pattern:

$d, e, f, g, h, i$

Alphabetical order is followed.

Numbers Pattern:

$12, 16, 20, 24$

Numbers increase by $4$.

Now fill the blanks properly:

$d \underline{e} e \underline{f} f \underline{8} 12 g \underline{h} 16 h \underline{i} 20 i \underline{j} 24$

So the missing group is:

$ef8hij$

Among the options, the closest correct sequential set is:

Correct Answer: ef8ghij