Yes it is, because not all technological advancements will be used correctly. For example nuclear technological advancements looked like a good idea back when they invented it, but now countries are trying to get nuclear weapon and plant locations so they can possibly use that in a war against another country
A constant in an experiment is <u>B. </u><span><u>the quantity that must remain the same</u>. If it is constant, it doesn't change, so it cannot be variable. D makes no sense. </span>
