Which type of engineering focuses on the design of machines and tools?

Mechanical engineering is the branch of engineering that concentrates on the design, analysis, manufacturing, and maintenance of mechanical systems. This field encompasses a wide range of activities related to moving parts and machines, such as engines, tools, and machinery. Mechanical engineers are skilled in applying principles of physics and materials science to devise functional and practical designs that meet specific needs.

This focus distinguishes mechanical engineering from other disciplines. For instance, civil engineering is primarily concerned with infrastructures such as roads, bridges, and buildings, utilizing principles of structural integrity and materials. Aeronautical engineering deals specifically with the development of aircraft and spacecraft, emphasizing aerodynamics and performance in the atmosphere and space. Chemical engineering focuses on the processes involving chemical reactions and the design of chemical plants, concentrating on converting raw materials into valuable products.

Thus, the distinguishing characteristic of mechanical engineering is its emphasis on the design and operational principles of machines and tools, making it the correct choice.