Thas a proprietary lease on an individual unit in the prestigious triumphant estates. most likely, what does t own?

T own shares in a cooperative unit

Explanation:

This is the correct option simply because of the definition of a proprietary lease. A proprietary lease is mostly known as an occupancy agreement. This documents provides shareholders who are part of a housing cooperative the right to inhabit a unit of the houses mostly in an estate,

a factory opens that mass-produces light bulbs.

explanation:

not sure if that's an answer to your questions but this is an example! : )