Answer :
The type of mood which Mary Cassatt created in this painting is; D. tranquil.
What is a painting?
A painting can be defined as an artwork that is typically used by an artist to express and depict an idea or thought about a place, thing, people, etc.
What is tranquil?
In English language, tranquil can be defined as a which connotes and describes a state of calm, serene, peacefulness, and quietness. Thus, it is a state of mind (place) that is free from any form of agitation or disturbance.
By critically observing the painting in the image attached below, we can reasonably infer and logically deduce that the type of mood which Mary Cassatt created in this painting is tranquil.
Read more on Mary Cassatt here: https://brainly.com/question/27781543
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