Detailed explanation and options for the selected question.
The maximum strength of the Lok Sabha is 545 members, as specified by Article 81 of the Indian Constitution. Option "500" is incorrect as the current strength is 545, not 500. Option "550" is incorrect because it is the upper limit after a possible increase, but 545 is the set limit. Option "600" is incorrect as it exceeds the maximum allowed number of 545 members.