GMAT Sentence Correction (SC) | Scientists have recently discovered what could be the

How do the two sentences differ from each other?

Scientists have recently discovered what could be the largest and oldest living organism on Earth, a giant fungusthat is an interwoven filigree of mushrooms and root like tentacles spawned by a single fertilized spore some 10,000 years agoand extending for more than 30 acres in the soil of a Michigan forest.

A giant fungus that is-
1) an interwoven filigree of mushrooms.
2) extending for more than 30 acres.


The bones of Majungatholus atopus,