Question #N784

The artist spent months researching and creating a series of intricate sculptures that reflected the beauty and complexity of nature. Each sculpture was made with a unique combination of materials, and the artist used a variety of techniques. In the end, however, the artist wanted each piece to convey a sense of unity and harmony.

Which choice best combines the sentences at the underlined portion to create a grammatically correct and stylistically effective sentence?
A. Each sculpture was made with a unique combination of materials, and using a variety of techniques, the artist wanted each piece to convey a sense of unity and harmony.
B. Each sculpture was made with a unique combination of materials, using a variety of techniques, the artist wanted each piece to convey a sense of unity and harmony.
C. Each sculpture was made with a unique combination of materials, using a variety of techniques, the artist wanted to convey a sense of unity and harmony in each piece.
D. Each sculpture was made with a unique combination of materials, and the artist wanted to convey a sense of unity and harmony in each piece.