Step 1: Understanding the Question:
The question seeks the sole factor the writer attributes to preserving her sanity while in the nursing home. The emphasis is on what "only" helped her.
Step 2: Analyzing the Passage:
The passage explicitly says: "The only thing that prevented me from running into the street and shouting for help, was that pigeon in the skylight." The writer then confirms, "I owe my sanity to that pigeon." Although the writer subsequently recalls other "consolations" like the winter sun and a child's laughter, these are presented as later reflections. The pigeon served as the "only thing" during the immediate crisis.
Step 3: Final Answer:
As directly stated in the passage, the single pigeon was the 'only' thing that stopped the writer from losing her sanity. Option (C) is the correct answer.
Write any four problems faced by the animals that thrive in forests and oceans: 
Verbal to Non-Verbal:
A stain is an unwanted mark of discolouration on a fabric caused due to contact with another substance which cannot be removed by the normal washing process. Stains can be grouped on the basis of their origin, e.g. tea, coffee and fruits come from vegetable source. Stains from shoe polish, tar, oil paints come under grease stains. Animal stains comprise of stains formed by milk, blood and eggs, whereas marks on your clothes after sitting on an iron bench are those of rust and come under mineral stains. Then there are stains that are formed due to dye, into perspiration which can be categorised under miscellaneous stains. Read the given passage and complete the table. Suggest a suitable title. 