Question

terrestrial biomes
caribou in the tundra biome
during summer.
why is it difficult for plants to grow in the
tundra?
because too many predators eat too many prey
animals
because the soil lacks nutrients, has permafrost,
and temperatures are below freezing most months
because there is too much sun

Explanation:

Tundra biome has soil with low nutrients, permafrost (permanently frozen sub - soil layer), and very cold temperatures (below freezing for most months). These factors make it hard for plant roots to penetrate (due to permafrost), limit nutrient availability (from poor soil), and slow down metabolic processes (due to cold) necessary for plant growth. The option about predators and prey is about animal - related interactions, not plant growth. The option about too much sun is incorrect as tundra has limited sunlight in some seasons (like long winters with little light) and even in summer, the cold and soil conditions are more limiting factors than excess sun.

Answer:

because the soil lacks nutrients, has permafrost, and temperatures are below freezing most months