Answer:
The correct option described second is "The tone is the same, but the word choice is less formal, probably for a younger reading audience."
Step-by-step explanation:
Replacing "of the Victorian era" with "during a period of time known as the Victorian era" shows less formality and a bit more explanation for younger readers.
Also "distinguished" is replaced with "respected" which is less formal and easier to be understood by younger readers.
The replacement of "Her poetry influenced ..... and Emily Dickinson" in first version with this long sentence "Her poetry was very ............. by Ms. Browning" in second version reduces formality to make it easier to understand for younger audience.