Answer: (1). Option (b) is correct.
Explanation:
An economic signal is an information or a data regarding the market which helps in making effective and economically correct decisions. Many businesses use these economic signals to make certain decisions.
All the options given in the question are referred as economic signal.
(a) It shows that the price of toilet paper remains the same over the next few year as well and not vary much.
(b) This lower price of housing results in higher demand for housing.
(c) This will to lead to take decisions which increases the employment opportunities.
(d) This represents the changing preferences of the consumers.