Option 1 -> more than just an exercise; it connected him with nature.
Option 2 -> a refreshing and mandatory routine for everyone.
Option 3 -> not purely a physical workout, but mental too for his grandchildren.
Option 4 -> a time for discussing daily routine chores.
Hence, Option 1 -> The passage explicitly states "I realised the walk wasn't just exercise—it was a communion with nature and a lesson in appreciating life's quiet beauty." The grandfather's interactions with stray dogs, experiencing the fresh air, flowers' scent, and exchanging pleasantries with others all demonstrate that his morning walk was fundamentally about connecting with nature and life around him, not merely physical exercise -> correct