To construct a price index, all of the following are needed EXCEPT

Aa base year.
Ca market basket.
Bthe current inflation rate.
Dthe price of market basket items.

Verified Answer :

To construct a price index, all of the following are needed except the current inflation rate.

I believe the answer is: current inflation rate

Price index refers to the numbers that is used to measure a change of price for a product within one period with another, based on its performance in the market.

Even though inflation rate can affect product's price, it does not related to how the product perform in the market because inflation only affect strength of currency.