i think the answer is "C" for item "A"
Engine
Electricity: A shown in the illustration, which of the lighting fixtures represents an incand...
Discussing this exam question.
I think the correct answer should be "C" (Figure A) and not "D" (Figure B). Figure B appears to be a mercury vapor lamp. Additionally, Figures B, C, and D all depict ballasts, which incandescent bulbs do not require.
A wins my vote