Fact 1: Aplant requires sunlight to grow.

Fact 2: Vineyards are vertically trellised, low to the ground, increasing sunlight exposure in the fruit zone.

Given the two facts above, answer the question "To promote plant growth, vineyards are often" with the following options: 
- Converted sugar
 - Earthworms
 - covered with mud
 - one celled organisms
 - open for wine tours
 - vertically trellised
 - important habitats
 - shielded from pollinators


 

      vertically trellised   