A foot-candle is equivalent to 144 inch-candles
equivalent to the illumination produced by a source of one candle at a distance of one foot
a light source for viewing the inside of an oven
the primary method of illuminating a food-service area in most of the Indian sub-continent

The correct answer is ''equivalent to the illumination produced by a source of one candle at a distance of one foot.''

Explanation:

A foot-candle is the amount of illumination received in an area of a surface that is a sphere with a radius of one foot, emitted by a light source with an intensity of one candle. The candela is a unit of luminous intensity and it is a fixed unit in the same way that a meter or kilogram works.A foot-candle  can also be expressed in terms of light. This is the unit of how powerful light appears to be to the human eye, known as luminous flux. A one-foot candle is equivalent to the illumination emitted by light with a luminous flux of one lumen on an area of one square foot.

the correct answer is 4 (giveaways to the public)

something that is given away or gave out for free. an occasion at which things are given away to free. something that is evident or obvious; something that uncovers a mystery.

it could be be in a form of a lucky draw as well. these the company events gather more audience for their pr and it also increases their ratings as well. this is a way to attract more customers towards themselves.