Find the option that best completes the analogy.
DP: XZ :: EN:?

The correct option is YX.

To solve this letter analogy, we analyze the pattern by determining the positional values of the letters in the standard English alphabet (where A = 1, B = 2, ..., Z = 26).

Step 1: Analyze the relationship between DP and XZ

Find the alphabetical position of each letter in DP:

D is the 4^th letter.

P is the 16^th letter.

Find the alphabetical position of each letter in XZ:

X is the 24^th letter.

Z is the 26^th letter.

Now, calculate the numerical difference for each letter position:

$4+20=24$ (D ⇒ X)

$16+10=26$ (P ⇒ Z)

The pattern adds +20 to the first letter's position and +10 to the second letter's position.

Step 2: Apply the same pattern to EN

Find the alphabetical position of each letter in EN:

E is the 5^th letter.

N is the 14^th letter.

Apply the positional shifts (+20 to the first letter and +10 to the second letter):

First letter position: $5+20=25$, which corresponds to Y.

Second letter position: $14+10=24$, which corresponds to X.

Combining the resulting letters gives YX.

Therefore, the term that best completes the analogy is YX.