What should come in place of '?' in the given series?
3 8 6 11 9 14 ?

The correct answer is Option 1 (12).

To find the missing number in the given series, let us analyze the pattern or rule governing the sequence of numbers:

3, 8, 6, 11, 9, 14, ?

We can observe the step-by-step operations applied to get each consecutive term:

From 3 to 8: Add 5 ($3+5=8$)

From 8 to 6: Subtract 2 ($8-2=6$)

From 6 to 11: Add 5 ($6+5=11$)

From 11 to 9: Subtract 2 ($11-2=9$)

From 9 to 14: Add 5 ($9+5=14$)

Following this alternating pattern (+5, -2, +5, -2, +5, ...), the next operation to get the missing term '?' must be to subtract 2 from 14:

$14-2=12$

Alternatively, we can look at the series as two alternating sub-series:

First sub-series (1st, 3rd, 5th, 7th terms): 3, 6, 9, ?

Here, each term increases by 3: $3+3=6$, $6+3=9$, so the 7th term is $9+3=12$.

Second sub-series (2nd, 4th, 6th terms): 8, 11, 14 (each term increases by 3).

Therefore, the number that comes in place of '?' is 12.