We know that the speed of light is 300,000,000 m/s and that Earth is 150,000,000 km from the Sun. To find out how long it takes for light from the Sun to reach Earth we first need to convert 150,000,000 km into m, then we need to that number by the of light. The answer we get is s, which is the same as about 8.3 .

most community's take hundreds of years to become stable

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.

true                                                                                                       true true true true true true