People can do the following with the help of a good dictionary: • look up the meaning of an English word you see or hear • find the English translation of a word in your language • check the spelling of a word • check the plural of a noun or past tense of a verb • find out other grammatical information about a word • find the synonym or antonym of a word • look up the collocations of a word • check the part of speech of a word • find out how to say a word • find out about the register of a word • find examples of the use of a word in natural language. The correct answer is C.