Final answer:
The best topic sentence that supports the thesis statement about Phylicia's significant role is option B, which directly highlights her contributions to solving mysteries.
Step-by-step explanation:
The question at hand requires us to select the best topic sentence that supports the thesis statement, “Although Hector is the main character in detective tales, Phylicia actually plays a more important role.” Analyzing the thesis, we understand that the focus is on Phylicia’s significance, which surpasses that of Hector, despite him being the main character.
Option B, “Phylicia usually comes up with information that helps solve the mystery,” best aligns with the thesis statement as it suggests her vital role in contributing to the mysteries' resolutions. This sentence directly supports the thesis by highlighting Phylicia’s importance which is expressed through her actions in the narrative. Furthermore, Option C, “This shows that Phylicia does more to solve the mystery than Hector,” could also serve as a strong supportive topic sentence since it directly compares the contributions of Phylicia and Hector, reinforcing Phylicia’s preeminence.