Answer:
(C) Laggards
Explanation:
A laggard in general refers to someone who lags behind or whose progress is slow.
The word "adopter" refers to, someone who adopts and accept something new. Adopters are categorized as, customers based upon their desire to try out new things or accept latest trends.
Five kinds of adopters are described under the said classification namely, innovators, early adopters, early majority, late majority and laggards.
In the given case, Tom belongs to the category of "laggards" as evidenced from his ignorance and unwillingness to accept technological advancements. The acceptance of a smartphone later, has been an outcome of requirement and not his own willingness here.