Visa expiry date?

[mamoru01]

I'm applying for T2 Dependent visa.
On the visa application, it asks for main applicant's visa expiry date.

Is this the date mentioned on Entry Clearance in her passport or BP Permit?
The Entry Clearance was valid for only a month so has already expired.
I would appreciate any clarification.
thanks

[epani]

The end date on BRP Card.