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In the early 1800s, potatoes became the main food staple for the people of Ireland. In 1845, a
Which of the following statements correctly explains why the Irish potato famine occurred?
A - The arrival of ships from South America led to human introduction of the disease.
B - A drought across Ireland in 1844 led to more damaged potato plants that were susceptible to infection.
C - An increase in trade with other European countries led to the introduction of plants that were already infected with the fungus.
D - Ireland’s climate became closer to that of South America, which allowed the fungus to infect potato plants and reproduce.
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