If a saturated salt solution gives off heat while being prepared, should you cool down or heat up the solution to get more of the salt to dissolve in it?

An engineer decides to use a slightly weaker material rather than a stronger material, since she knows that the stronger material can break suddenly. this is an example of what? a choosing a material that will show warning before it fails b using composite materials that combine strength c using a material for multiple applications d using design techniques that increase efficiency and reduce cost