If you are unable to find a saved document, where can the search box be found?
a. in the documents library.
b. in the my files area.
c. next to the start button in the task bar.
d. in the file locator.

C. Next to the start button in the task bar.

Explanation:

The search box is use to find any saved document in the computer , the location of the search box is just near to the start button in the task bar itself .

Hence ,

From the given options i.e. , In the Documents Library. , In the my files area.  ,  Next to the start button in the task bar.  , the correct option to find the search box , In the file locator.

Correct is  Next to the start button in the task bar.

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