Feedforward control refers to observing the situation, organizing information, grasping the rules, predicting the trend, correctly predicting possible problems in the future, and taking measures in advance to eliminate possible deviations in the bud state. According to the above definitions, Which of the following are feedforward control:. ['Stock investors predict the possible risks of stock investment this year based on the stock market prices of previous years.', 'An enterprise formulates a corporate strategy based on the size, core competitiveness and development plan of the enterprise.', 'An e-commerce network has developed multiple solutions to respond to possible market changes.', 'A factory adjusts its production model due to rising prices of raw materials and fuels.']