Question

choose a word or phrase to complete each part of the summary for \unplanned outcomes.\ inventions are created as solutions to problems or needs. , even useful inventions can have unplanned effects. options: earlier, sometimes

Explanation:

To complete the sentence, we need a word that makes sense in the context of inventions having unplanned effects. "Earlier" refers to time and doesn't fit here. "Sometimes" indicates that even useful inventions can at times have unplanned effects, which logically fits the context.

Answer:

Sometimes