The correct answer is: C. Portico : House
A proscenium is the part of a stage that is in front of the curtain. It is the area where the actors perform. A portico is a porch or entrance to a building that is supported by columns. It is the area where people enter and exit the building.
In both cases, the first word is a part of the second word. The proscenium is a part of the stage, and the portico is a part of the house.
The other options are not correct because the first word is not a part of the second word. A lamp is not a part of a table, linen is not a part of a bed, and a compass is not a part of a needle.