What role do tree roots play in its stability?

Tree roots serve a critical role in the stability and overall health of a tree. Their primary functions are to anchor the tree securely into the ground and to absorb essential water and nutrients from the soil. By anchoring the tree, roots prevent it from toppling over in strong winds or adverse weather conditions, thus contributing to its structural stability.

Furthermore, the roots extend across a broad area underground, which allows them to access moisture and minerals that are vital for the tree's growth and development. This dual function of anchoring and nutrient absorption is vital for a tree's resilience and longevity.

In contrast, the other options don't accurately represent the functions of tree roots. While roots do indirectly contribute to processes such as photosynthesis by providing nutrients and water necessary for growth, they do not absorb carbon dioxide or prevent sunlight from reaching the tree. Each of these roles belongs to different parts of the tree or other environmental processes.