The surprise that Jose's parents brought him was the teacher who always believed in him.
What was the surprise?
The surprise was that Jose's parents brought him was the teacher who always believed in him when he was torn between joining the space crew which was something that he had always wanted to do.
Reassurance is important because when we are unsure or worried, reassurance can help us feel calmer and more secure. It validates our concerns and reminds us that we're not alone.