The artist attempted to vivify the painting. The artist added people dressed in bright colors in the foreground. 

A Vivifying the painting, the artist added people dressed in bright colors in the foreground.

B The artist attempted to vivify the painting because he added people dressed in bright colors in the foreground.

C The artist attempted to vivify the painting by adding people dressed in bright colors in the foreground.

D Whereas the artist attempted to vivify the painting, he added people dressed in bright colors in the foreground.