1.

1). The “Smart City” concept conceptualizing2). Difficulties in its implementation has 3). The “Smart City” concept when conceptualized4). The “Smart City” concept that was conceptualized

Answer»

In order to understand which of the given phrases can be used to form a meaningful compound sound that is grammatically congruent, we can use them one by one.

OPTION 1 : The “Smart CITY” concept conceptualizing some time AGO could not take off due to difficulties in its implementation. 

Option 2 : cannot use this in any manner to form a structurally sound sentence

Option 3 : The “Smart City” concept, when conceptualized some time ago, could not take off due to difficulties in its implementation. 

Option 4 : The “Smart City” concept that was conceptualized some time ago could not take off due to difficulties in its implementation. 

The word conceptualize means to form an idea or PRINCIPLE in one’s mind. Option 3 does not sound APT because of the incorrect usage of when in the sentence.

Option 4 seems to be the best among the given options.

Therefore, the correct answer is option 4.



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