Can you please explain how can Identify outliers? and what is outliers?

The dotplots below show the distribution of fat content for a collection of child cereals and a collection of adult cereals. did 0 l 2 3 4 5 O 3 o 3 3 E 5 edit 3 3 3 3 . 3 3 3 C I I 3 3 3 a 3 3 3 3 ffT;nf 0 l 2 3 4 5 thavhg) In the distributions of fat content in cereals, which of the following could be outliers? O the adult cereals with 3 grams of fat in a serving 0 the adult cereal with 5 grams of fat in a sewing O the child cereal with 3 grams of fat in a serving