The correct option is
B Forecast
'Prognosis' - means a statement of the judgement of what is likely to happen in future.
Option A - 'Scheme' means an organized plan for doing something. Thus option A is incorrect.
Option C - 'Preface' means an introduction at the beginning of a book explaining its purpose. Thus option C is incorrect.
Option D - 'Identification' is an act of recognizing. Thus option D is incorrect.
Option B - 'Forecast' means a statement of the judgement of what likely to happen again in future. 'Forecast' is especially used for weather. Thus option B is the correct answer.
'Prognosis - Forecast'