use:
d: Diego
s: Sean
Dx: x is on the Dean's list
Px: x is a philosophy major
Sx: x is a student
Vx: x is a valedictorian
-There is exactly one philosophy major on the Dean's list.

Question

use:
d: Diego 
s: Sean
Dx: x is on the Dean's list 
Px: x is a philosophy major 
Sx: x is a student
Vx: x is a valedictorian
-There is exactly one philosophy major on the Dean's list.

Quizplus · Accepted Answer

The Answer of use:
d: Diego 
s: Sean
Dx: x is on the Dean's list 
Px: x is a philosophy major 
Sx: x is a student
Vx: x is a valedictorian
-There is exactly one philosophy major on the Dean's list.

Use: D: Diego