Insurance reserve: refers to the reserve of raw materials established by an enterprise to prevent the late arrival of raw materials or increase the unplanned demand. which of the following are insurance reserves? ['Aunt Zhang usually used to buy more grains, oils, and salts at home, just in case there is something you ca n’t leave to buy.', 'The director Li looked at the unsold products in the warehouse and looked sad, thinking about how to expand the sales channels.', 'Floods are raging and road traffic is seriously threatened. Factory Director Liu is not in a hurry because the raw materials have been prepared for the flood season.', 'Manager Wang collects debts and collects money many years ago, paid employees year-end bonuses, and prepared various funds for construction in the coming year.']