Answer: These can be explained as follows :-
Explanation: Costs which changes with the change in level of output is called variable cost and the cost which remain fixed at every level of output is called fixed cost. Therefore :-
A. Payment of fire insurance is a fixed cost as it will remain same at all levels.
B. Requirement of dough will increase with the increase in sales hence it is a variable cost.
C. Workers wages will remain same even if there is no sale hence it is a fixed cost.
D. She has to make lease payment irrespective of output hence it is a fixed cost.
E. Weekly payment to newspaper is not affected by the level of sales hence it is a fixed cost.