A close friend moved to a planet in the Sirius system, about 8 lightyears away from Earth. When you call him on the phone, assuming he answers immediately, how long would it take you to hear him say "hello" from the time you placed the call? Explain your answers

2cool and cold temperature unless its an ever green tree 

Evidence peice 1: millions of years ago existed the supercontinent pangea after millions of yearsnit broke into peices and formed smaller continents and islandsevidence peice 2: there is a massive fault line in san fransico and california that has the potential to cause massive earthquakes which supports the theory of fault linesevidence peice 3: mountains are said to be formed by earths tectonic plates crashing against each other for millions of years and eventually if forms a big point know as a mountain.evidence peice 4: the mariana trech is the deepest place (so far) discovered in the oceans of earth. it is so deep that you can literally see how earths plates are divided and or continents as well

What do i have to choose from? what are the answer choices? .