Answer: (D) laggard.
Step-by-step explanation:
According to the diffusion of innovations theory, adopters are categorized in innovators, early adopters, early majority, late majority, and laggards, depending on the time it gets for innovations to spread among them.
Laggards are those who come last to embrace technological innovation. People in this category are usually against change-agents and rather focus on traditions. They tend to be from a low social and economic level, and the oldest among adopters.