Answer:
6 x 3 x3 square inches
Step-by-step explanation:
We have the figure given to us:
The figure has 6 boxes measuring 3 inches by 3inches
The total surface area is obtained as shown below:
![\begin{gathered} TSA=3*3*6 \\ TSA=6*3*3in^2 \\ \\ \therefore TSA=6*3*3\imaginaryI n^2 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/iyxtgjgbs79dam5eplhez6hq23usa8o71k.png)
Therefore, the answer is the last option (6 x 3 x3 square inches)