Final answer:
A plant with deep taproots and a protective cuticle is well-adapted to the Desert biome, where these adaptations help in accessing moisture and conserving water. The correct answer is option A).
Step-by-step explanation:
A plant with deep taproots to access groundwater and a stem covered by a cuticle to decrease moisture loss would most likely thrive in a Desert biome. Desert plants often have adaptations such as deep taproots that enable them to reach deeper soil regions where moisture persists after rainfall. The cuticle minimizes water loss in these arid environments, making it a crucial adaptation for plant survival under such extreme conditions.
In contrast, a biome like the tundra has frozen soil much of the year, making it unsuitable for plants with deep taproots. Grasslands and the taiga do not experience the same level of water scarcity as deserts, meaning the specific adaptations described would be less crucial in those biomes.