1.

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option.If a sentence is free from error, select 'No Error'.We have to always be on our (1)/guard to ensure the highest level (2)/of safety inside train operations. (3)/ No Error (4)

A. 1
B. 2
C. 3
D. 4
Answer» D. 4


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