Step 1: Convert letters to positions.
D = 4, F = 6, H = 8, J = 10, L = 12. The letters have the same positions as the numbers next to them.
Step 2: See the rule.
Every term is (letter at position n, the number n) with n = 4, 6, 8, 10, 12. So n goes up by 2 each time.
Step 3: Next value of n.
The next n is 14. The letter at position 14 is N.
Step 4: Write the term.
The term is N14. It is the 4th option.
Final Answer:
Both the letter position and the number equal 14 in the next term, giving N14, option 4.
\[ \boxed{\text{N14}} \]