Argumentation

noun the quality of being clear, logical, and convincing; persuasiveness

• The cogency of the argument presented by the expert was undeniable.
• I was impressed by the cogency of his reasoning during the debate.
• Her cogency in explaining the concept blew my mind.
• The cogency of her emotions was evident in the way she expressed herself.

adjective a word that describes or modifies a noun or pronoun, in this case, 'well-reasoned' describes something that is thought out or logical

• The judge appreciated the well-reasoned arguments presented by the defense attorney.
• I always enjoy listening to well-reasoned opinions during debates.
• Her explanation was so well-reasoned, it totally made sense.
• His decision to invest in that company was well-reasoned, like a carefully crafted puzzle coming together.