Find the missing term:
BDF, EGH, HJJ, ?

The correct option is KML.

To find the missing term in the sequence BDF, EGH, HJJ, ?, let us analyze the pattern of each letter position separately.

1. First letters of each term:
B (2nd letter) → E (5th letter): +3 positions
E (5th letter) → H (8th letter): +3 positions
Following the same pattern:
H (8th letter) + 3 positions = K (11th letter)

2. Second letters of each term:
D (4th letter) → G (7th letter): +3 positions
G (7th letter) → J (10th letter): +3 positions
Following the same pattern:
J (10th letter) + 3 positions = M (13th letter)

3. Third letters of each term:
F (6th letter) → H (8th letter): +2 positions
H (8th letter) → J (10th letter): +2 positions
Following the same pattern:
J (10th letter) + 2 positions = L (12th letter)

Combining the resulting letters from each step gives KML.