Answer: Parallel play
Explanation: Parallel play is a small phase in a young toddler’s life where he or she plays alongside other toddlers but doesn’t interact with them.
This is a common occurrence with toddlers between the ages of 1 and 2, and it joins other curious toddler phases like talking to themselves and getting overly clingy.
Similarly, though, this activity isn’t anything to worry about – and, in spite of appearances, actually sets the stage for social play.