Final answer:
The 'Portrait of a Girl with a Bussolà' by Rosalba Carriera was made with d. pastel on paper. This medium gave the work its unique texture and vibrant colors, characteristic of Carriera's artistic style.
Step-by-step explanation:
Rosalba Carriera created the portrait of a girl with a Bussolà between 1725-1730. This artwork was made using d. pastel on paper, which is a medium known for its soft and delicate texture that allows for rich color application. Pastels offer a different outcome compared to other mediums such as oil on canvas, which is used for a more refined and durable finish, or watercolor on paper, known for its transparency and fluidity.
Carriera’s work is thus distinctive due to its use of pastel, capturing a tender and ethereal quality which is characteristic of her style. The mention of the portrait of Jean-Baptiste Pigalle in pastels is another example of how pastels were utilized for their vibrant hue and textural possibilities.