Replace the words if needed and choose option 5 if no replacement is required.
When Ellen had given up hope her car would start, a doleful encounter with a neighbor got her back on the road
I. Hope - bliss
II. Doleful - Fortuitous
III. Encounter - Adventure
The word 'hope' is correct here and needs no change.
The word 'encounter' means 'meet (someone) unexpectedly' and fits here correctly.$
The word 'doleful' means 'sorrowful' and is incorrect here as the sentence mentions something positive. The person was benefited by the encounter thus 'fortuitous' which means 'happening by chance rather than intention' is the correct word here.$
Option 2 is the correct answer.$