It is given that the inequalities.
We need to determine the inequalities which have an open circle.
The graph will have an open circle only if it has the symbol < or > because it indicates that the boundary is not included.
Option A:
![t \geq 25](https://img.qammunity.org/2021/formulas/mathematics/middle-school/c0g41fi2wiekjw487t3j8unzaxh70ae1z1.png)
The inequality shows that it contains the boundary point 25.
Hence, the inequality
does not have an open circle.
Hence, Option A is not the correct answer.
Option B:
![-2.5 \leq m](https://img.qammunity.org/2021/formulas/mathematics/middle-school/7udcjox57rfu5vnd5rna88t0l51077tnf5.png)
The inequality shows that it contains the boundary point -2.5.
Hence, the inequality
does not have an open circle.
Hence, Option B is not the correct answer.
Option C:
![x>5.4](https://img.qammunity.org/2021/formulas/mathematics/middle-school/xykagzsayl97tqgwxinslb7oq6unfoamfc.png)
The inequality shows that it does not contains the boundary point 5.4
Hence, the inequality
have an open circle.
Thus, Option C is the correct answer.
Option D:
![(1)/(2)>x](https://img.qammunity.org/2021/formulas/mathematics/middle-school/v6wxgs4h4ppb1otzb8nw1lt1xmplow0nil.png)
The inequality shows that it does not contain the boundary point
![(1)/(2)](https://img.qammunity.org/2021/formulas/physics/middle-school/ukxexrkoplrwscaxd96qbbkphc5fo6w2ur.png)
Hence, the inequality
have an open circle.
Thus, Option D is the correct answer.
Option E:
![x>0](https://img.qammunity.org/2021/formulas/mathematics/high-school/ic8y97v77sc18o0dq68z7e2ndyya82bwdt.png)
The inequality shows that it does not contain the boundary point 0
Hence, the inequality
have an open circle.
Thus, Option E is the correct answer.