Question

Recent studies on the Lotus leaf have revealed that its surface is covered in microscopic wax crystals that make it both hydrophobic and super-repellent to water, allowing it to stay clean by having water droplets roll off and take dirt with them. Researchers have successfully applied similar wax-like microstructures to create self-cleaning paints and fabrics. The success of these synthetic surfaces suggests that:
A. lotus leaves are less effective at staying clean than the newly created synthetic fabrics.
B. nature-inspired, self-cleaning, and hydrophobic surfaces can be effectively engineered for industrial and household use.
C. self-cleaning technologies can only be created by using actual organic wax from plants.
D. water-repellent surfaces are generally impractical to create for everyday applications.

Answer 1

B. nature-inspired, self-cleaning, and hydrophobic surfaces can be effectively engineered for industrial and household use.

Justification: The fact that researchers reproduced the lotus leaf's microstructure and made functional self-cleaning paints and fabrics shows these properties can be engineered for practical applications.