Which sentence is an example of a strong conclusion to an autobiography?

1 I knew I would have to practice all week to memorize my dance for the recital.

2 On opening night, I danced in front of a packed auditorium.

3 I stayed after school three days in a row to practice onstage in the auditorium.

4 After the recital was over, I knew practicing was worth it, and I was looking forward to my next big challenge.

An autobiography refers to a report of the life of someone written by himself or herself, this implies an autobiography is a self-written record of the most important events of that person life including information related to family, education, achievements, professional or personal development, among others. Like other texts, the content of autobiographies can be developed in an introduction, a set of body paragraphs and a conclusion, in the case of the conclusion section this aims at summarizing the content of the autobiography and giving it a closure, specially through a reflection on the impact the most important moment had for the person who is writing it. Considering this, "After the recital was over, I knew practicing was worth it, and I was looking forward to my next big challenge" is an example of a strong conclusion as it refers to moments or events that were probably developed during the autobiography, summarizes them and it shows the reflection of the author on how these events affect its perspective of life as this emphasizes the importance of practice to achieve an important goal.