Answer:
Because we are sisters, our memories are inextricably linked to each other.
Explanation:
The word inextricably can be understood as a bond or connection that cannot be distinguished or separated. Here, the sentence that used the word 'inextricably' correctly is 'Because we are sisters, our memories are inextricably linked to each other.'
This is because we know that sisters normally share a bond that is intrinsic and inborn. So using the word 'inextricably' in this sentence makes it more meaningful as it can connect the the idea that 'sisters are indeed inseparable' and share a bond that is indistinguishable.
For "He lived a year in a minute" I think it means that all of a sudden he looks very old, is tired, or maybe time went by really fast? Like I said I am not 100% sure so don't take my word for it. Heck I am not 10% sure, more like I am 5% sure, 20% at the most. Sorry if I am wrong.
I say false only because we would get out way later.