Answer:
- Lead user.
Explanation:
'Lead user' is the term coined by Eric von Hippel to describe the advanced users or the users who adapt a problem quite competently.
In the given example, Food Tech would be characterized as a 'lead user' as it displays an 'intensive and early adaptation' to the difficulty. It identifies the customer problem i.e. 'fear of salmonella poisoning compelled restaurants for using inferior tasting bottled dressing' and develops their product concept accordingly i.e. 'preservatives and food additives, has developed a process for pasteurizing eggs on a large-scale basis' to counter this difficulty in a limited time period.