The correct answer is C. Layout tools.
Step-by-step explanation
Layout tools are a group of artifacts that are designed and manufactured to contribute to human tasks in specific measurement tasks, and quantification of lengths and inclinations in construction, design, planning on a plane, geometry, mathematics, among others. In the layout tools group are the measuring tape and the ruler they serve to measure lengths in centimeters, meters, inches, millimeters, among other units of measurement; a plumb line is also a tool used to calculate the inclination of a vertical surface using the force of gravity; likewise, the bullet level is a tool that uses the bubble of a liquid as a guide to know if it is completely level or has an inclination or deviation. According to the above, the correct answer is C. Layout tools.