Answer:
B. rápidamente
Step-by-step explanation:
First, let's translate what we are given.
Susana tiene piernas muy fuertes. Corre ______.
⇒ Susana has very strong legs. She runs _____.
Now, let's translate our answer choices.
A. mal: bad
B. rápidamente: fast
C. peor worse
D. muy: very
Since Susana has strong legs, it makes sense that she would run fast.
Therefore, the best answer choice is B. rápidamente
The completed stance is:
Susana tiene piernas muy fuertes. Corre rápidamente
⇒ Susana has very strong legs. She runs fast.