In the above case, nurse has gone “form” instead of “from” from room to room looking for missing patient.
Therefore, the other words such as nurse, missing and patient are correctly spelled words used in the above context.
Thus, the options (a), (d) and (c) are incorrect.
In the above case, nurse has gone “form” instead of “from” from room to room looking for missing patient.
Therefore, the correct option is – b. form.