From the given alternatives select the word which cannot be formed using the letters of the given word:
$$\text{MANUSCRIPT}$$

Let's check each option against the letters available in the word $\text{MANUSCRIPT}$ ($\text{M, A, N, U, S, C, R, I, P, T}$):
* PRIMUS $\to$ All letters are available ($\text{P, R, I, M, U, S}$).
* SMART $\to$ All letters are available ($\text{S, M, A, R, T}$).
* RUSTIC $\to$ All letters are available ($\text{R, U, S, T, I, C}$).
* MASTER $\to$ Contains the letter 'E', which is completely absent in $\text{MANUSCRIPT}$.

Therefore, MASTER cannot be formed.