What is the missing term @ in the following?
ACPQ: BESU: MNGI: @

Correct Option (4)

The relationship between the first pair of terms, ACPQ and BESU, is established by a consistent letter-shifting pattern based on their alphabetical positions:

• The first letter 'A' shifts to 'B' (+1 position).
• The second letter 'C' shifts to 'E' (+2 positions).
• The third letter 'P' shifts to 'S' (+3 positions).
• The fourth letter 'Q' shifts to 'U' (+4 positions).

This pattern involves adding 1, 2, 3, and 4 to the alphabetical position of each successive letter, respectively.

Applying the same pattern to the term MNGI to find the missing term:

• The first letter 'M' (+1) becomes 'N'.
• The second letter 'N' (+2) becomes 'P'.
• The third letter 'G' (+3) becomes 'J'.
• The fourth letter 'I' (+4) becomes 'M'.

Therefore, the missing term is NPJM.

Incorrect Options:

Options 1 (NPJL), 2 (NOJM), and 3 (NPIL) do not adhere to the established +1, +2, +3, +4 letter-shifting pattern derived from the relationship between ACPQ and BESU. Hence, these options are incorrect.