The development of the __________ prevents plants from drying out and protects them from microbes.

Step 3: Analyze the function of each option: - Xylem: Responsible for transporting water and nutrients from roots to other parts of the plant. It does not directly prevent drying out or protect against microbes. - Cuticle: A waxy layer covering the surface of leaves and stems, which reduces water loss and acts as a barrier against microbial invasion. - Stomata: Pores on the leaf surface that regulate gas exchange and water vapor release, but they do not directly prevent drying out or protect against microbes. - Chloroplast: Organelles responsible for photosynthesis, not related to water retention or microbial protection.

Step 4: Based on the analysis, recognize that the cuticle is the correct answer because its waxy composition directly prevents water loss and provides a protective barrier against microbes.