Select the sentence that has the correct use of spellings from the given options.
1
Althogh the book was difficult to read, I persisted and eventualy understood the complex ideas.
2
Although the book was difficult to read, I persisted and eventually understood the complex ideas.
3
Although the book was difficult to read, I persisted and eventualy understood the complex ideas.
4
Although the book was difficult to read, I persested and eventually understood the complex ideas.