Which Advanced Setting should be created for the vCenter Server to change the expiration policy of the
vpxuser password?

A.
VimPasswordExpirationInDays

B.
VimExpirationPasswordDays

C.
VimPassExpirationInDays

D.
VimPasswordRefreshDays

Explanation:

vCenter Server creates the vpxuser account on each ESX/ESXi host that it manages. The password for each vpxuser account is auto-generated when an ESX/ESXi host is added. The password is updated by default every 30 days.
To modify default password settings:
1. Connect vSphere Client to vCenter Server.
2. Click Administration > vCenter Server Settings > Advanced Settings.
3. Scroll to the parameter VirtualCenter.VimPasswordExpirationInDays and change the value from the default.
Reference: http://kb.vmware.com/selfservice/microsites/search.do?
language=en_US&cmd=displayKC&externalId=1016736