the quality of food. the prediction of weather. the availability of medication. the effectiveness of vaccinations.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Louis Pasteur's work in the nineteenth century on pasteurization greatly improved
Possibilities:
- the quality of food.
- the prediction of weather.
- the availability of medication.
- the effectiveness of vaccinations.

the quality of food.