Final answer:
Foster suggests that celebrating Christmas in mid-winter makes more sense due to the association of winter with darkness, cold, and the need for warmth and companionship.
Step-by-step explanation:
Foster's statement suggests that it is more appropriate for Christmas to be celebrated in mid-winter rather than in the summer. This is because winter is associated with darkness, cold, and the need for warmth and companionship. Christmas, with its emphasis on light, warmth, and gathering with loved ones, aligns better with the themes and atmosphere of the winter season.