Question

sort the words according to the meanings of their shared roots. educate plentiful conductor introduction conduct completed full or fill lead

Explanation:

The word "plentiful" relates to the meaning "full or fill" as it implies a large amount or being full. Words "conductor", "introduction", "conduct" are related to "lead" as they involve guiding or leading - a conductor leads an orchestra, an introduction leads into a topic, and to conduct means to lead or direct. "Educate" and "completed" do not fit well with either of these root - meaning categories.

Answer:

full or fill: plentiful
lead: conductor, introduction, conduct