Answer: C. Sturdy shoes are a must for most trips, especially those that involve walking.
Explanation:
The supporting detail that would best develop the topic given in the question is "Sturdy shoes are a must for most trips, especially those that involve walking".
Since the topic relates to convenience about air travels, the best option that supports the topic is C. Others options given doesn't butress the point riasee in the topic. Option B gives more details with regards to the topic.
