When a scientific study on the harmful effects of a particular food preservative was published, Ultimo Foods, a popular potato chips producer, stopped using preservatives in its potato chips. This change significantly reduced the shelf life of the chips even though there were no customer complaints about Ultimo Foods' products. This is an example of a$($n$)\_\_\_\_\_.$

a$.$ reactive strategy

b$.$ defensive strategy

c$.$ accommodative strategy

d$.$ proactive strategy