Answer:
The root of the word "conclusion" is "concl" which comes from the Latin "concludere".
Explanation:
Root is the constituent of the word that contains lexical meaning but does not include derivational or flexional affixes. That is, the root of a word is the part of the word that is related to its historical origin. In the case of the word "conclusion", the root is "concl", which is linked to the Latin origin of the word. "Conclusion" originated from the Latin "concludere" and means act, process or effect of termination; finalization, termination. Conclusion is the act of finalizing an activity.