Self-study
Support Unlike stars, planets do not generate light, but only reflect it. ███████ ██████ █████ ███ ████ █████ █████████ ███████ ██ ████ ██████ ████ ███ ███ ████████ ██████ █████ ███ █████████ ███████ ██ ████ ██████ ████ ████████ █████ ███ ███ ███ ██████
Summarize Argument
The author concludes that there are some non-star celestial objects in this galaxy that generate light. As support, the author says that planets don’t generate light, and there are many celestial objects in the galaxy that are not planets.
Identify and Describe Flaw
The argument says that planets don’t generate light, and there are lots of non-planet and non-star celestial objects in this galaxy. However, the only thing that we know about non-star celestial objects is that one group (planets) doesn’t generate light. There is no support for the conclusion that some non-star celestial objects do generate light. From what we know, it could be the case that all non-star celestial objects don’t generate light.
14.
The reasoning in the argument ██ ████ ██████████ ██ █████████ ██ ███ ███████ ████ ███ ████████ █████ ██ ████████ ███ ███████████ ████
a
this galaxy contains ██ █████████ ███████ ████ ███████ █████ █████ ████ ███████
An object’s ability to reflect light is not relevant to the argument. The conclusion is about objects that generate light, so the possibility that planets are the only objects that reflect light isn’t relevant to the argument.
b
celestial objects in ████ ██████ ████████ ████ █ ██████ ██████████ ██ ███ ███ █████████ ███████ ██ ███ ████████
The stimulus is only concerned with celestial objects in this galaxy; the possibility that objects in this galaxy are only a minute percentage of the objects in the universe isn’t relevant to the argument.
c
celestial objects in ████ ██████ ███ ███ ███ ████ █████████ ███████ ████ ████████ █████
The possibility that there are celestial objects outside of this galaxy that generate light is not relevant to the argument. The conclusion is only concerned with celestial objects in this galaxy.
d
there are numerous ████████ ████ ███████████ █████ ████ ███████ ███████ ███ ███████ ██ ████████ █████
The argument is not concerned with the features that distinguish stars from planets. This argument is not about categorizing celestial bodies; the argument is just concerned with which celestial objects in this galaxy generate light.
e
planets are not ███ ████ █████████ ███████ ████ ██ ███ ████████ █████
This is the flaw. The stimulus does not indicate that there are any non-star celestial objects in this galaxy that generate light. We know that planets don’t generate light. It could be the case that the other non-star celestial bodies also don’t generate light.