Only my neighbour succoured me during my illness.

Answer: Option C

Nourished : provide with the food or other substances necessary for growth, health, and good condition.
Treated : behave towards or deal with in a certain way.
Aided : help or support (someone or something) in the achievement of something.
Attended : be present at (an event, meeting, or function).
Succoured : give assistance or aid to.

Synonym of Succoured is Aided