Which of these interfere with communication on earth? 1. sunspots
2. solar Flares
3. solar wind
4. solar prominences

2) Solar Flares

Explanation:

Solar flares have been known to affect electronic communication because their energy stirs up the Earth's upper atmosphere, making radio broadcasts noisy and weak. The flares, caused by violent storms on the Sun, eject a stream of electrically-charged particles, some of which reach the Earth.

the denominator has a very specific role.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.