C. 11
Step-by-step explanation:
We know that Hector is writing the expression in the expanded form.
Now, = 7 × 7 × 7 × 7 × 7 × 7 × 7 × 7 × 7 × 7 × 7
i.e. 7 is multiplied 11 times in order to obtain the result .
Thus, we see that there are 11 terms being multiplied in the expanded form.
Hence, option C is correct.
