Direction: In the following questions, some parts of the sentences have errors and some have none. Find out which part of a sentence has an error. The number of that part is the answer. If there is No error, your answer is (4), i.e. No error.
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					 Solve the question according to given instruction.
 
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- You can
 - open the box
 - by a screwdriver.
 - No error
 
 
Correct Option: C
Screwdriver is a tool. Hence, with a screwdriver is the right usage. Look at the example given below : Cut it with a knife.