Fill in the blank with a suitable preposition.
Selena lost _______ four successful matches.
The preposition ‘after’ is used to denote the contrast that follows an action. In the given context, Selena was successful in four matches, but she lost in the fifth. Therefore the turn of events happened ‘after’ winning four matches. Thus ‘after’ is the suitable answer, so option A is correct. The preposition ‘with’ is used to denote a tool used for performing a task. If we use ‘with’ in the blank it would mean that Selena lost the fifth match using the ‘four successful matches’ which would be illogical. Therefore ‘with’ cannot be used, hence option C is incorrect. Similarly, ‘at’ and ‘under’ cannot be used in the sentence since they will change the meaning of the sentence. ‘At’ denotes an exact place or position, while ‘under’ means ‘less than’. 'Four successful matches’ are not a place where Selena lost, therefore option B is incorrect. Whereas when we use ‘under’ it would mean that Selena lost less than four matches. But the word ‘successful’ explains this is not the case, therefore ‘under’ cannot be used. Hence option D is incorrect.