Engineers are problem-solvers who use math, science, creativity and other knowledge and skills to solve problems. They use every possible resource to create the things that they imagine. But engineering is not just inventing. It’s a systematic practice for solving problems. That means that when an engineer encounters a problem, he or she has a system in place for breaking down the problem and trying different solutions. We also use the word “engineering” to describe the building or technology that engineers produce.

Different types of engineers solve different kinds of problems. A mechanical engineer might design a rollercoaster that is fun and safe using knowledge of physics and mechanics, while a civil engineer might design a system for creating highways to connect remote areas of developing countries.

Which of these people is an engineer?

A
someone who sells a new watch that can also make phone calls

B
someone who studies fossils to understand the Earth's natural history

C
someone who entertains audiences by making things seem to disappear

D
someone who uses knowledge of chemistry to solve a pollution problem in a town