Why do producers heed the cues of the marketplace

Because Convenience product is enough affordable item that merits little shopping efforts. Like candy, soft drinks, combs, aspirin. Diminutive hardware items, dry cleaning and car washes.
Specialty products, Extensive for a particular item, and hesitant to accepts backup. Rolls Royce automobiles, Bose speakers, Rolex watches.

Secured loans are protected by collateral security. examples: title loans where the borrower uses the car title as collateral security interest rates are lower and repayments are longer therefore risk is low as a collateral security is given as guarantee to the bank in case of failure to pay the loanunsecured loans are not protected by collateral security but it is given on the creditworthiness of the borrower, trusting that she/he will pay on time. examples; payday loans is a short term loan where the borrower lends money from the bank and pays is back when the borrower receives his/her wages.interest rates are high and repayments are shorter. but the risk is high as no collateral security is given as a guarantee to the bank for payment of the loan

Cancer  is the  uncontrolled growth and division of cells  that is often prevented by  cell-cycle checkpoints that monitor for dna damage or spindle fiber failure and stop the ..  cancer  is theuncontrolled growth and division of cells that is caused  by un-repaired..