Loamy soil is ideal for gardening because it contains
mostly silt with very little clay or sand.
mostly clay with very little silt or sand.
mostly sand with very little clay or silt.
roughly equal parts sand, clay, and silt.

Mostly silt with very little clay or sand.

Explanation:

Silt is what plants grow best in as it carries the nutrients most plants require to thrive. Clay and sand absorb the moisture and other important nutrients the plant needs in order to grow.

one would be wind another would be water density