Olivia enjoys watching little birds at the many feeders in her yard. She counts how many of them she can see in her yard every morning before she leaves for school. Her data for two weeks can be seen below.DaySunMonTueWedThuFriSatWeek 131362434452741Week 216342018253831 What is the mean of the number of little birds that Olivia sees in her yard each morning? Round to the nearest bird, if necessary.a.34b.31c.30d.26