When you feel compassion for someone else, it means you show kindness and willingness to understand and help others. Based on this, the sentence that best develops the theme about the importance of compassion for other people is - so she understood how he must feel - this is also similar to the saying "get into someone else shoes"
Following, ensuing, succeeding, later, future, coming, to come, next
Yes actually the main answer was the piglet help the dog