Answer:
A. a block of ice
Explanation:
The description of a house looking like "a block of ice" is the phrase that creates a dark and foreboding mood. A house that looks like a block of ice does not seem to be a warm or welcoming house. Therefore, the passage implies that the character might not find something pleasing inside. Moreover, the coldness of the environment is reflected in the coldness of the architecture of the house.
