During the $2020$ COVID$-19$ pandemic, many organizations quickly developed and adopted new ways of delivering services to customers. For$$ instance, restaurants that had previously been$$ dine$-$in only offered curbside pickup$$ and$/$or home delivery. This is an example of$\_\_\_\_\_\_\_.$

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Part $1$

A$.$

concept testing

B$.$

test marketing

C$.$

product testing

D$.$

service process design

E$.$

commercialization