Answer: d.
![4.5\leq c\text{ or }x\leq12](https://img.qammunity.org/2020/formulas/mathematics/high-school/kg8vqpikqrzg96698z1yz6w3jr18q4v4ph.png)
Explanation:
Let the number of ounces of clay that Elisa uses to make one vase of either size denotes by 'c'
Given : To make a small vase, Elisa uses no more than 4.5 ounces of clay.
i.e.
![4.5\leq c](https://img.qammunity.org/2020/formulas/mathematics/high-school/l8n6u3oxvqs8s6ndexwbxpju5p2kkskscr.png)
Also, To make a large vase, she uses at least 12 ounces of clay.
i.e.
![c\leq12](https://img.qammunity.org/2020/formulas/mathematics/high-school/gycis2mqivw4t68uishshusks5rsn25zpo.png)
Then , the compound inequality represents the number of ounces of clay that Elisa uses to make one vase of either size will be :-
![4.5\leq c\text{ or }c\leq12](https://img.qammunity.org/2020/formulas/mathematics/high-school/bm1y25s7vn2q2vzas7w7ewtobjlz20orbu.png)