To determine how many eighth graders took the survey, we need to add the number of eighth graders who preferred pizza to the number who preferred tacos.
From the table:
- Number of 8th graders who prefer pizza = 54
- Number of 8th graders who prefer tacos = 81
Now, we add these two numbers together:
54 + 81 = 135
Therefore, the total number of eighth graders who took the survey is 135.
The correct response is 135.