Question

how do engineers solve the problem of using the smallest possible amount of explosive?
problem: engineers want to use the smallest possible amount of explosive.
solution: ?
options (right):
engineers drill a hole in a column to demolish it.
engineers try to keep the cost down for explosives.
engineers test an amount of explosive on a column.
engineers guess an amount that is exactly what they...

Explanation:

To solve the problem of using the smallest possible amount of explosive, engineers would test different amounts on a column to find the minimum effective quantity. The option "Engineers test an amount of explosive on a column" directly relates to determining the smallest effective explosive amount by experimentation. Other options either describe unrelated actions (drilling a hole, guessing, cost - cutting) or don't address finding the minimum explosive amount.

Answer:

Engineers test an amount of explosive on a column.