Is a relatively early form of animation which uses clay sculptures that are moved and photographed in tiny increments.

Claymation is a relatively early form of animation

I think it may be Stop Motion. Stop motion is a fairly early form of animation. You take a photo, then move the object/sculpture to a different position etc. Then take continuous photos with the sculpture/object in a different environment or position. It's very time consuming though.
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Iwould say d) signed unknown street singers who brought original songs to record.

Religion changed from primitive times through the renaissance period until today such that certain church conventions and rules were set about how the holy family could be portrayed. for instance: mary must always be in a blue mantle, jesus could only be in a white robe after the resurrection, jesus could no longer be seen pointing with his walking stick when performing a miracle, and so on.hope this