In statement given below, a part of the sentence is enclosed in quotation marks. Below are given alternatives to the quotes part which may improve the sentence. Choose the correct alternative. In case no improvement is needed, option 'D' is the answer.If you are not clear about the meaning of a word, it is wise to "look to" a dictionary.

• A. look for
• B. look at
• C. look up
• D. No improvement