How Can Both Clay and Ice Crystals Enhance Chemical Reactions

Multiple Choice

How can both clay and ice crystals enhance chemical reactions necessary to form complex organic molecules?

A) Both have highly reactive surfaces that help to lower the energy of activation for reactions that form complex organic molecules.
B) Both trap the water needed in reactions that result in organic molecules.
C) Both have the necessary elements to form amino acids.
D) Both have microscopic spaces that help to concentrate reagents, facilitating reactions involving those reagents.