Explanation:

- In this code language, each letter is assigned a number that is its position in the alphabet (e.g., A=1, B=2, ..., Z=26). The code for a word is the sum of the numbers assigned to its letters.

- 'O' is 15 because O is the 15th letter in the alphabet.

- 'ADD' is 9 because A=1, D=4, and D=4. So, 1 + 4 + 4 = 9.

- To code 'PURE', calculate: P=16, U=21, R=18, E=5.

- Add these together: 16 + 21 + 18 + 5 = 60.

- Option 1: 60

- Option 2: 58

- Option 3: 57

- Option 4: 59

The correct answer is Option 1: 60.

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