54. ......I would have called her.
ব্যাখ্যা: The correct completion of the sentence is: "If Rana had seen me." So, the complete sentence is: "I would have called her if Rana had seen me." Explanation: This structure follows the third conditional form in English grammar, which is used to talk about unreal situations in the past and their hypothetical outcomes. In this case, "If Rana had seen me" sets up the hypothetical situation in the past (Rana seeing me), and "I would have called her" describes the hypothetical outcome of that situation (me calling her).. The structure "would have called" is the correct past perfect conditional form for the verb "to call" in this context. [তথ্যসূত্রঃ Master English]