Concept: Water starts the biochemical reactions needed for seed germination.
Explanation:Water is absorbed by the dry seed through a process called imbibition.
This absorption softens the seed coat, making it easier for the young root and shoot to emerge.
Water also activates the enzymes present in the seed.
Once activated, these enzymes break down stored food such as starch, proteins, and fats into soluble forms.
The embryo uses these soluble nutrients for growth.
Therefore, the most important role of water among the given options is to activate the enzymes.
Answer: C. activate the enzymes.