To determine which expression will be true based on the given expression R > O = A > S < T, we need to carefully analyze the relationships:
- R > O: R is greater than O.
- O = A: O is equal to A.
- A > S: A is greater than S.
- S < T: S is less than T.
From these relationships, we can deduce:
- R > A: Since O = A and R > O, it follows that R > A.
- A > S: Directly given, so implicitly O > S and R > S.
Next, evaluate each option:
- O > T: Based on S < T and A > S, neither O > T nor T > O is definitively concluded from the initial expression.
- S < R: Combining R > A and A > S, we deduce R > S, hence S < R is true.
- T < A: No concrete relation can be determined between T and A from the given statements.
- S = O: Since A > S and O = A, then S cannot equal O.
Therefore, the expression that is definitely true is S < R.