sayantanc2k wrote:
Yes, that is one way of eliminating the option. Another way may be:
The conjunction "and" needs to join two items. If we consider "works" the first item, then we need a verb. If we consider "to strengthen" the first item, then we need an infinitive. Instead of either of these two, we see a prepositional phrase ( in cooperation with), which has no element to be matched with.
So the problem can be viewed as a parallelism issue as well.
Exactly, makes sense sayantanc2k
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