In the figure, r//s

< 2= < they are corresponding angles of parallel lines cut by a transversal.
< 5=< by the vertical angles theorem.

 , because they are corresponding angles of parallel lines cut by a transversal.

by Vertical angles theorem.

Step-by-step explanation:

From the given picture, we can see there are two parallel lines r and s intersected by a transversal line t.

Since corresponding angles of parallel lines cut by a transversal.

Therefore they must be equal.

Then,

Also, since are vertical angles.

Vertical angles theorem says that vertically opposite angles  at any cross section must be equal.

by Vertical angles theorem.

since proposition states that a number is greater than 25, if is true then the number must actually be greater than 25.

this implies that all possible options, except 24, can be accepted