Hi! A brown dwarf was an incomplete furnace so it must have lithium. If a celestial object does not have lithium, it cannot be a brown dwarf. Thus, No celestial object that has no lithium in its atmosphere is a brown dwarf. Hope this helps!

Me!

My brain switched kinds for numbers fsjgkshgkshkgs

I understand what D is saying, but am not able to comprehend how it justifies the argument. Would anyone be kind enough to offer an explanation?

Observing C & E convinced me that I really do need to use lawgic after all because my intuition tells me it is the same thing sigh We got this!

#feedback this was a great explanation, especially for D. Thank you!

#help Does anyone have any strategies to deal with timing? I understand why it is D, but the thought process is taking too long. Any guidance is appreciated. Thank you!