Running quickly, the finish line was reached by Anna.
AAnna reached the finish line by running quickly
Bthe finish line was reached by Anna quickly
CAnna's quick run reached the finish line
Dby running, the finish line came to Anna
Answer & Solution
Correct answer: A. Anna reached the finish line by running quickly
1. Original dangles the modifier. 2. Anna must be the subject.
_Source: 501-GMAT-Questions Ch 3 Sentence Correction_