Explanation:
The given word is "PERAMBULATOR".
To find the word that cannot be formed using the letters of the given word, we need to check if all the letters of the word are present in the given word.
Let's analyze each option:
a) MARBLE - All the letters of the word "MARBLE" (M, A, R, B, L, E) are present in the given word "PERAMBULATOR". Therefore, option "a" can be formed using the letters of the given word.
b) LABOUR - All the letters of the word "LABOUR" (L, A, B, O, U, R) are present in the given word "PERAMBULATOR". Therefore, option "b" can be formed using the letters of the given word.
c) RAMBLE - All the letters of the word "RAMBLE" (R, A, M, B, L, E) are present in the given word "PERAMBULATOR". Therefore, option "c" can be formed using the letters of the given word.
d) RAMPANT - The letters "R", "A", "M", "P", "A", "N", and "T" are present in the given word "PERAMBULATOR". Therefore, option "d" can be formed using the letters of the given word.
Since all the options can be formed using the letters of the given word, the answer is option "D" (RAMPANT) which cannot be formed using the letters of the given word "PERAMBULATOR".
Therefore, the correct answer is option "D" (RAMPANT).