This is a net of a solid. Which of the following solids will this net form?

1. Identify the number and types of faces in the net

The net consists of $3$ rectangular faces and $2$ triangular faces.

2. Determine the 3D solid formed by these faces

A solid with $2$ identical triangular bases and $3$ rectangular lateral faces is a triangular prism. Mentally folding the net confirms that the two triangles form the parallel ends, and the three rectangles form the sides connecting them. This matches the triangular prism shown in Option (3).