Explain briefly why mosaics were a good artistic medium for conveying a spiritual message.

This was due to the art form’s ability to express reflect divine, mystical and supernatural subjects.  This was further heightened when skilled artisans used gold and other materials in creating mosaics in churches. This gave the finished product a mystical effect especially since it depicts the life of God and the saints.

Mosaics were a good artistic medium for conveying a spiritual message, because, due to art form's ability to express reflect divine, mystical and supernatural objects. This was further heightened when skilled Artisans used gold and other materials in creating Mosaic churches, which gave the finish product a mystical effect.

   ~hope this helped

Explanation:

i believe it d) heterogeneous