Which sentence uses the word blue in a connotative manner?

a. During his “Blue Period,” the artist Pablo Picasso used that color in many of his paintings.
b. Amina takes out her violin and plays when she feels blue, and it always manages to cheer her up.
c. Robert would have preferred a red lampshade, but the store only had blue lampshades in stock.
d. The dress code for the event is casual, but blue jeans and sneakers are discouraged.

b. Amina takes out her violin and plays when she feels blue, and it always manages to cheer her up.

The sentence that uses the word blue in a connotative manner is option b. "Amina takes out her violin and plays when she feels blue, and it always manages to cheer her up."

To determine which sentence uses the word "blue" in a connotative manner, we need to analyze the possible meanings and associations of the word "blue" in each sentence.

Sentence (a) refers to Picasso's "Blue Period," which is a well-known artistic phase in which Picasso predominantly used the color blue in his paintings. This usage of "blue" is primarily descriptive and does not carry any strong emotional or symbolic connotations.

Sentence (b) suggests that Amina plays her violin when she feels "blue," which implies that she plays it when she is feeling sad or down. In this sentence, "blue" is being used metaphorically to convey an emotional state rather than the color itself. This conveys a connotative meaning of "blue" as sadness or melancholy.

Sentence (c) mentions Robert's preference for a red lampshade but settling for a blue one instead due to the store's lack of stock. This usage of "blue" is purely descriptive, indicating a color choice rather than any specific emotional or symbolic connotation.

Sentence (d) refers to a dress code where blue jeans and sneakers are discouraged. The usage of "blue" here is once again merely descriptive, indicating a color of jeans that is not preferred for the event.

Based on this analysis, the sentence that uses the word "blue" in a connotative manner is sentence (b): "Amina takes out her violin and plays when she feels blue, and it always manages to cheer her up."