Question

why did dr. linds experiment in 1747 work? oranges and lemons were more pleasant than the other treatments. oranges and lemons contain vitamin c, which prevents scurvy. the sailors with the best results were healthier than the other sailors.

Explanation:

Dr. Lind's experiment worked because oranges and lemons contain vitamin C. Vitamin C is known to prevent scurvy, a disease caused by its deficiency. The other options are not the fundamental reason. The pleasantness of oranges and lemons (first option) is not the key factor in treating scurvy. The third option is more of an observation of the result rather than the cause of why the treatment (oranges and lemons) worked.

Answer:

Oranges and lemons contain vitamin C, which prevents scurvy.