The description in the passage most clearly reveals that:
- C. Anna is loving
This is evident from the fact that Anna drops to her knees and hugs each and every one of the dogs, displaying affection and care towards them. Additionally, her reaction of laughing in delight when Buster shakes water all over her shows her joy and positive attitude towards the dogs' playful behavior. Overall, Anna's actions and reactions in the passage demonstrate a loving and affectionate nature towards the dogs, indicating that she has a caring and warm-hearted personality.