Being or amounting to a single unit or individual or entire thing, item, or object rather than two or more; a single
Answer:
A.
Explanation:
Warmth, comforting hug, and home all express a familiar and sentimental feeling. All of the other options express no emotion and are just words, leading it to be A.
Metaphor or possibly personification
Answer:
All the planets have atmospheres, are made of rock of gas, and some have moons or rings.
Explanation:
Not all planets have moons and rings, they all have atmospheres.