Choose the word or phrase which is nearest in meaning to the given word:
Prognosis
A) Scheme
B) Forecast
C) Preface
D) Identification

Hint: Synonyms are words that are similar meanings. Synonyms are used when you do not want to repeat the same word again and again.

Complete step by step answer:
We have to find the meaning of prognosis and the meaning of words that are given in the options. And both the words should have the same meaning or the exact sense.
The meaning of prognosis is an opinion or based on medical experience. And we have to find the correct answer from the options given whose meaning is the same as prognosis.
Option A) Scheme – is an incorrect answer because the meaning of scheme is ‘an official plan or system for doing or organizing something’ and this is not synonym of the word prognosis. Thus, this is an incorrect answer.
Option B) Forecast – is the correct answer because the meaning of forecast is ‘to say what will probably happen in the future’ and this is the synonym of the word prognosis. As they have similar meaning and exact sense and they can be used in place of each other. Thus, this is the correct answer.
Option C) Preface – is an incorrect answer because the meaning of preface is ‘a written introduction to a book that explains what it is about or why it was written’ and this is not synonym of the word prognosis. Thus, this is an incorrect answer.
Option D) Identification – is an incorrect answer because the meaning of identification is ‘the process of showing, recognizing or giving proof of who or what somebody or something is’ and this is not synonym of the word prognosis. Thus, this is an incorrect answer.
Prognosis – forecast (synonym) (Option B)
So, the correct answer is “Option B”.

Note:
Synonyms are the words that have the same or exact meaning. So, Option B is the synonym of the word prognosis is forecast and they can replace each other because of the same meaning. Antonyms are the words that have opposite meanings, antonyms of prognosis are certain. So, out of all other options, Option B is the best fit.