Based on the abiotic factors provided in the table, the most reasonable statement about the biotic factors of the biomes is:
Animals in Biome A burrow into the loose sand to avoid the heat.
This statement aligns with the hot temperatures and loose, dry soil described for Biome A, suggesting that animals may adapt behaviors such as burrowing to escape the heat. The other statements are less supported by the information about each biome:
- Animals in Biome B having thick coats is not reasonable since the temperatures are moderate, which typically wouldn't require such adaptations.
- The idea that plants in Biome A grow taller than those in Biome B is not supported by the data given, especially since Biome B has moist, nutrient-rich soil which usually supports more robust plant growth.
- Farming conditions are likely better in Biome B due to the presence of moisture and nutrients, contrary to the last option's claim.
Therefore, the burrowing behavior of animals in Biome A is the most reasonable inference.