Question

the passage below discusses some of the steps of an engineering - design challenge. select the part of the passage that describes constraints. hint: constraints are factors that limit the possible solutions. building a circuit rose is in the science club at her middle school. she is trying to build a circuit that uses a switch to control a fan. the only available materials are wires, switches, fans, and batteries. she assembles her circuit and turns on the switch. rose is disappointed to see that the fan does not spin and suspects that there is a problem with the way she wired her circuit. so, she rewires everything before trying again.

Explanation:

Constraints are factors limiting solutions. The text mentions "The only available materials are wires, switches, fans, and batteries." This restricts the components Rose can use for her circuit - design, thus it is the constraint - related part.

Answer:

The only available materials are wires, switches, fans, and batteries.