Using the data, which statement is true? Α.Sample 1 is the only metal, because it is shiny and a good conductor of
electricity.

B. Sample 3 is the only metal, because it is the only sample that is a liquid at
room temperature.

C. Sample 2 is the only metal, because it is shiny and solid at room
temperature.

D. Samples 1 and 2 are both metals, because both samples are shiny and solid
at room temperature

the answer your looking for is c).

on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h

hence, the building installed with incandescent lights bears more electricity bill.