Step 1: Understanding the Concept:
The sentence talks about something seen in textile use in every period of history, for rich and poor alike. This idea belongs to the study of fashion in textiles.
Step 2: Key Idea:
Fashion means the style of dress and fabric that people accept and follow at a given time.
Every society, in every period, shows some fashion in what it wears and how it uses fabric.
This is true whatever the wealth or class of the people.
Step 3: Apply to the Sentence:
The blank must be filled by a word that describes a trend in how textiles are used.
Only 'Fashion' fits. The sentence then reads: Irrespective of wealth, class and different section of the society, fashion can be observed in textile usage of any period.
Step 4: Why the other options are wrong.
Food is a basic need but has nothing to do with how textiles are used.
Textile is the subject of the sentence itself, so it cannot be the thing observed in its own usage.
Shelter is a basic need for housing, not a feature of textile usage.
Final Answer:
The missing word is Fashion. This is option (C).