In his drawings, len no longer makes scribbles on the paper and has just started to make identifiable squares and circles. according to kellogg, what stage of artistic development is len displaying?

According to Kellogg, the stage of artistic development that Len is displaying is the shape stage. In this stage, the child is starting to identify different shapes and try to illustrate it into his writings in the paper. Parent may notice that the figures written in the paper would already resemble the actual shapes.

i would say b. research typically uses a variety of sources