The correct answer is: a) Unicameral legislature.
A unicameral legislature is a legislature with only one chamber or house. The Tamil Nadu Legislative Assembly is a unicameral legislature with 234 elected members. The members are elected from single-member constituencies by first-past-the-post voting. The term of the Legislative Assembly is five years.
A bicameral legislature is a legislature with two chambers or houses. The two chambers are usually called the upper house and the lower house. The upper house is usually smaller than the lower house and has members who are elected or appointed for longer terms. The lower house is usually larger than the upper house and has members who are elected for shorter terms.
A tricameral legislature is a legislature with three chambers or houses. The three chambers are usually called the upper house, the middle house, and the lower house. The upper house is usually the smallest chamber and has members who are elected or appointed for the longest terms. The middle house is usually the second smallest chamber and has members who are elected or appointed for medium-length terms. The lower house is usually the largest chamber and has members who are elected or appointed for the shortest terms.
The Tamil Nadu Legislative Assembly has no upper house.