Athenian elites, despite acquiring their wealth through commerce, reinvested it in land and viewed commerce as a disreputable means of earning a living. true or false

That statement is true.
At that time, merchants had a very bad reputation in the eyes of Athenian's people.
They're known to bribe government officials, hiring assassins to murdered their competitors, and use the service of mercenaries to initiate a raid to obtain resources.