Choose the word closest in meaning to the underlined word-
Raymond discovered several errors on his test.
(a)Answers
(b)Corrections
(c)Mistakes
(d)Numbers

Hint: Try to understand the meaning of the underlined word. Now go through the options, recall what they mean and choose the one that means the same or is closest to mean the same of the given word.

Complete answer: In the given question, the underlined word is 'error' which is a noun which means - a mistake. For example: "spelling errors". We have to find a word which is synonymous to 'errors'. A synonym is a word, morpheme, or phrase that means exactly or nearly the same as another word, morpheme, or phrase in the same language.
We will look at each option carefully and know their meaning and then figure out the answer through it:
Option 'a' answers mean a thing that is said, written, or done as a reaction to a question, statement, or situation. For eg. He knocked and entered without waiting for an answer.
Option ‘b’ corrections mean the action or process of correcting something. For eg. I checked the typing of errors and sent it back for correction.
Option 'c' mistakes mean an act of judging that is misguided or wrong. For eg. Maybe I’ll make mistakes, but at least they’ll be my own.
Option ‘d’ numbers mean a mathematical value, expressed by a word, symbol, or figure, representing a particular quantity and used in counting and making calculations.
After analysing each option carefully and knowing their meaning, we came to the point that option “c” is the correct answer. Option 'c' i.e. 'mistake' has the meaning as required in the sentence.

Note: Any given word may have one or more that one synonym. While analysing all the options, you must also try to make sentences out of them, to help you increase your vocabulary.