Question

Which of the following is typically part of the knowledge base of research and development scientists working on heating devices?(1 point)
Responses

sales projections
sales projections

substances and their properties
substances and their properties

engineering rules and principles
engineering rules and principles

marketing strategies

Answer 1

The option that is typically part of the knowledge base of research and development scientists working on heating devices is **substances and their properties** and **engineering rules and principles**. However, given that only one option can be chosen, the most relevant choice would be **engineering rules and principles** as they are essential for designing and developing heating devices.