阅读下面短文,从短文后各题所给的A、B、C和D四个选项中,选出可以填入空白处的最佳选项。 Kindness is a simple answer in a sometimes difficult and challenging world.For a long time it has been my work to 1 and appreciate all people and to 2 others to do the same. When my granddaughter Skylar was young and we'd go out,we had a(n) 3 called "Who can make the most people smile?" And we continue it today.It 4 for a wonderful day.When Skylar sees someone walking down the aisle with her 5 down,she'll walk up to her and gives her a big 6 .I watch her walk on.turn around and smile at Skylar 7 perhaps smile at someone else. Kindness is a chain that 8 us all together.In 2002,my dad had a series of strokes and other illness.At that time, I was in a women's networking 9 .One day I asked the ladies if they could send their 10 energies and maybe do something nice for someone to whom they would not 11 think about doing something nice. That same day,I made cookies for the 12 at the post office.When I gave him the cookies he 13 looked a little embarrassed."Why,Linda?"he asked."Because I 14 you!"I answered."When I get here at 6 a.m.and it is still 15 outside,knowing you are inside makes me feel 16 .And when I first moved here and my post office 17 was always empty,you always 18 me on.And you keep this place 19 ."That evening his wife called me and said that he was 20 ."No one even knows his name,let alone bakes him cookies!"