C. Machine learning can solve the nutrition problem.

C. 机器学习可以解决营养问题。

He noted that some countries have many underweight people, meaning the nations are facing what he called a " double burden" of nutrition problems.

他指出，一些国家有许多体重过轻的人，这意味着这些国家正面临他所说的营养问题的“双重负担”。