Wilbur does not like change. He thinks the cell phone he currently owns is just fine even though it doesn't have all the features of new phones on the market. Wilbur hopes that he doesn't lose this phone because the company doesn't make this style anymore and he doesn't want to get anything different. What type of adopter is Wilbur?

Laggard

Explanation:

Laggard is defined as the person who tends to have slow progression motion .This person takes more amount of time than usual average time for pursuing work and thus, usually lags behind.It is usually considered as under-performing as compared to related people or working.

According to the question,  because Wilbur is a laggard as he does not want to move forward with new phone system and rather stick to the same phone.He does not display progressive thinking and is afraid to lose or damage his phone as no such model in anymore present in market.   

the branch of biology that deals with the normal functions of living organisms and their parts.

the way in which a living organism or bodily part functions.

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.