Biology

The cultural method in the options provided is: C.Arrange crops with hanging fertigation.

Explanation:

1.Cultural methods involve modifying farming practices to manage pests, diseases, and other factors affecting crops. This includes practices such as crop rotation, intercropping, spacing, and planting methods that help prevent or reduce pest and disease problems.

2.Arrange crops with hanging fertigation involves a practice that could influence plant health, growth, and nutrient distribution in a way that may reduce the likelihood of pest or disease buildup. Although this isn't the most common example of a cultural practice, it still falls under modifying agricultural practices to improve plant health.