Reading Comprehension (RC) | Dogs are widely employed by the police

HeyLeo8

My thoughts below

Question 4:-
Please see the last line of the passage
The recent developments in this direction suggest that the detection mechanisms of insects are likely to be applied in practice in the near future The author is optimistic about Insects in the future.

Now if you see the options,
A. Moderately optimistic
B. Completely neutral
C. Highly doubtful
D. Largely uninterested
E. Mildly pessimistic

Apart from A,
...

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