1.

1). AC2). AD3). CD4). AB

Answer»

The ERRORS are in parts C and D.

There is no singular form of police. It is always plural. ALSO the sentence is not stressing on one particular police force. There are many police forces in any country. So in option C we must write 'police forces.' MOREOVER, ''SOLVING Crimes'' is one aspect of policing. 'Crimes' are plural but solving crimes is one particular activity. So, if we rate this activity, it is going to be only one rate like 5% or 6% ETC. If we say rates, it would mean different rates. So we must use 'rate' only. So option 3 is correct.

Correct Sentence: Increased interaction among different police forces would improve the rate of solving crimes.



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