Read the following context and choose the best option to answer the question.
Context: It 's pretty tough when you 're on the long stretch of the highway , you never really stop to think about where you ' ve been . So this is where I take some time to look into the rear view mirror and reflect a bit of light in your eyes . Week One The first week started with a plane landing accompanied with a warm smile and hug from my aunt . She specially flew over for about 2 weeks to celebrate my gran 's 101 birthday .
Question: What may be the reason to drive all that way ?
Options: 
- To go on a cruise .
 - To celebrate my grand birthday .
 - To go to a family reunion .
 - To go to Disney World


To celebrate my grand birthday .