In a certain code, BASIC is written as DDULE. How is LEADER written in that code?

To find the pattern, compare each letter in BASIC with its coded version DDULE:

B → D (position 1)

A → D (position 2)

S → U (position 3)

I → L (position 4)

C → E (position 5)

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Analyzing the letter shifts using alphabetical positions:

B (2) → D (4): shift of +2

A (1) → D (4): shift of +3

S (19) → U (21): shift of +2

I (9) → L (12): shift of +3

C (3) → E (5): shift of +2

The pattern alternates:

• Odd positions (1, 3, 5): shift by +2
• Even positions (2, 4): shift by +3

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Applying the same pattern to LEADER:

L (position 1): L + 2 = N

E (position 2): E + 3 = H

A (position 3): A + 2 = C

D (position 4): D + 3 = G

E (position 5): E + 2 = G

R (position 6): R + 3 = U

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Therefore, LEADER is written as NHCGGU in the code.

The answer is Option 1: NHCGGU