Concept:The correct sequence of jumbled sentence parts must form a logical, grammatically coherent sentence about domestic fires in Indian villages.
Explanation:The sentence begins with the subject "Domestic fires in Indian villages".
Part S ("lit in Chulhas") specifies how the fires are made, so S comes next.
Then part R ("are wasteful") describes the fires, so R follows S.
Part P ("as the heat is dispersed") explains why they are wasteful, so P comes after R.
Finally, part Q ("an unhealthy smoke accumulates in unventilated houses") states the consequence, so Q ends the sequence.
Thus the correct order is S, R, P, Q.
Answer:The correct sequence is SRPQ, which corresponds to option D.