Plants that have large, waxy leaves and shallow root systems and that grow to extreme heights to compete for sunlight are most likely to be found in which of the following biomes?

Desert plants are typically adapted to conserve water, featuring small or no leaves and deep root systems to access underground moisture. The conditions are arid and do not favor the growth of tall plants with large, waxy leaves, making this choice inconsistent with the characteristics described in the question.

The tundra biome is characterized by cold temperatures and a short growing season, where vegetation primarily consists of low-lying shrubs and mosses. Plants here are adapted to harsh conditions, with small leaves and deep roots to survive frost and permafrost, which does not align with the characteristics of the plants mentioned in the question.

Savanna grasslands support grasses and scattered trees that are adapted to seasonal droughts and fires. While some trees may have shallow roots, they generally do not grow to extreme heights like those in tropical rain forests, nor do they typically feature large, waxy leaves. Thus, this biome does not match the description provided.