The task is to identify which word cannot be formed using the letters from the word "REASONABLE". Let's analyze each given option to check if it's possible to form them:
- BRAIN: The letters in this word are B, R, A, I, N. Checking against "REASONABLE":
- R: present
- A: present
- B: present
- I: not present
- N: present
Since the letter 'I' is not available in "REASONABLE", we cannot form "BRAIN". - BONES: The letters are B, O, N, E, S. Checking:
- B: present
- O: present
- N: present
- E: present
- S: present
All letters are available; therefore, "BONES" can be formed. - NOBLE: The letters are N, O, B, L, E. Checking:
- N: present
- O: present
- B: present
- L: present
- E: present
All letters are available; therefore, "NOBLE" can be formed. - ARSON: The letters are A, R, S, O, N. Checking:
- A: present
- R: present
- S: present
- O: present
- N: present
All letters are available; thus, "ARSON" can be formed.
Based on the analysis, the word BRAIN cannot be formed because it requires the letter 'I', which is not present in "REASONABLE".