Final answer:
The author supports comparison B in the passage, which states that going into business with a family member is more challenging than working with a stranger.
Step-by-step explanation:
The author supports comparison B in the passage, which states that going into business with a family member is more challenging than working with a stranger. The passage mentions that while growing a crop may be more difficult to start than a babysitting or lawn mowing service, growers face the same fierce competition. This implies that starting and running a business with a family member can be more challenging due to personal dynamics and conflicts that may arise.