Final answer:
Picasso's Blue Period was a time of sadness and despair in which he created paintings that reflected these emotions. One of his famous paintings, The Old Guitarist, depicted an old, blind man with a guitar and symbolized the struggles artists face in their careers.
Step-by-step explanation:
Picasso went through a period known as the Blue Period, which was marked by feelings of sadness and despair. During this time, he created paintings that were characterized by heavy, dark lines and shades of blue.
One of his most famous paintings from this period is The Old Guitarist, which depicts an old, blind man with a guitar. Picasso used this painting to express the struggles of artists and the theme of survival.