Correct Answer:
A. Being a member of both Houses simultaneously
The correct answer is Being a member of both Houses simultaneously. Double membership rules in a bicameral legislature typically prohibit an individual from holding a seat in both the upper and lower houses at the same time. If elected to both, one seat must be relinquished to maintain the integrity of the legislative structure.
The other options are generally allowed under various electoral systems, provided that if multiple seats are won, the individual chooses only one to retain. Being a candidate for two seats or contesting elections in different constituencies is often permissible, and resigning one seat to keep another is the standard procedure for resolving such situations.