Final answer:
The correct adverb to describe the father's driving on icy roads is 'cautiously.' This choice is consistent with the need for vigilance and safety under such conditions. Option b is the correct answer.
Step-by-step explanation:
The student has asked a language-based question which involves identifying the correct adverb that describes the nature of the father's driving in a sentence. The sentence provided by the student is 'Dad was late because he had to drive cautiously, the roads were icy.' Given this context, the adverb that best fits the scenario provided in the question is 'cautiously.' This is clearly supported by the information given within the sentence itself, stating that the roads were icy, a condition that would necessitate careful and cautious driving.
Driving behavior can vary based on different circumstances. For example, in the reference texts, we find instances of driving with different attitudes. In one scenario, Peter becomes impatient with a slow driver and displays aggressive behavior by honking and tailgating, and in another context, a driver initially drives fast but then slows down considering safety and the presence of police.
Lastly, the text mentions a woman strolling carelessly, unrelated to driving but illustrates a relaxed attitude in contrast to purposeful or vigilant actions.
In conclusion, the option that correctly completes the student's sentence is (b) cautiously. This reflects the careful and vigilant approach the father had to take due to the hazardous road conditions.