Final answer:
Dicot plants have seeds that typically contain two cotyledons, making option B) Two the correct answer.
Step-by-step explanation:
The seeds of dicot plants typically have two cotyledons. As characteristic of eudicots, or true dicots, these cotyledons are the first leaves to develop from a germinating seed and serve several important functions, including the storage and absorption of food reserves during the plant's early development. The presence of two cotyledons also contributes to the pattern of the veins in leaves, which form a network. The correct answer to the question of how many cotyledons are found in the seeds of dicot plants is B) Two.