Answer: Fraud
Explanation: In simple words, fraud refers to the actions that are taken with the intent of deceiving others for the objective of any kind of personal gain or such.
If any individual having any expertise in a subject matter, hired for consultancy service by some other individual, knowingly misstate or omit facts for personal benefit can be charge in crime of fraud.
In the given case, Ken was a real estate agent and Lily was his client and even after knowing the facts he persuaded her to make a deal for his own commission. Hence he committed a fraud.