Definition of Truss
A truss is a structural element that is composed of interconnected triangles to provide stability and strength to a structure. The members of a truss are typically made of steel or timber and are connected by joints.

Types of Truss
There are three main types of trusses based on the arrangement of their members:

1. Simple Truss
A simple truss has a single triangular shape and is composed of straight members connected at the joints. It is the most basic type of truss and is used in simple roof structures.

2. Compound Truss
A compound truss consists of two or more simple trusses connected to form a larger structure. It is used in larger roof structures or in bridges where longer spans are required.

3. Complex Truss
A complex truss has two or more members that pass over or under each other, creating a more intricate pattern. It is used in structures where the load is not evenly distributed or where there are irregular shapes.

Answer Explanation
The given statement states that if a truss has two more members surpassing each other, then it is a complex truss. This is because the truss has an intricate pattern due to the crossing of its members. This crossing creates a more complex structure that requires more precise calculations to ensure the stability and strength of the truss. Therefore, the correct answer is option C, complex truss.

A