Arts

Smarty

31 August, 13:38

May is writing this explanatory article about light bulbs.

The most common type of bulb is the incandescent bulb, which heats a filament wire to produce light. In contrast, an LED bulb contains semiconductors that emit light when turned on. Incandescent bulbs last about 750 hours while LEDs last about 20,000 hours. So why are we still using old, inefficient bulbs?

What details from the text support the idea that the paragraph uses a compare and contrast organizational strategy?

A.

The descriptions of how the bulbs create light and how long they last

B.

The information that the semiconductors in LED bulbs make them last a long time

C.

The question the author poses about why we are using old, inefficient bulbs

D.

The information that incandescent bulbs heat filament wires to produce light