A pioneer journalist, Nellie Bly's exploits included circling the globe faster than Jules Verne's fictional Phileas Fogg
A A pioneer journalist, Nellie Bly's exploits included- the possessive is incorrect.
B The exploits of Nellie Bly, a pioneer journalist, included - the exploits of nellie Bly, appositive phrase a pioneer journalist, included - sounds perfect
C Nellie Bly was a pioneer journalist including in her exploits the - This answer choice incorrectly uses the present participle ("verb+ing" - "including" in this sentence) to refer to an event that concluded in the past; we can use simple past instead.
D Included in the pioneer journalist Nellie Bly's exploits are - says that her exploits are a pioneer journalist
E The pioneer journalist's exploits of Nellie Bly included - sounds as if a pioneer journa was exploiting nellie bly. wrong.