Question

for which of the following would a prototype be hard to define? birds of north america greatest sports teams of all time feelings of parents when seeing child for the first time fuel efficient cars

Explanation:

To determine where a prototype is hard to define, we analyze each option:

• "Birds of North America": There are clear biological and taxonomic criteria to define bird species, so a prototype (a typical example) can be identified (e.g., a robin or sparrow as a typical North American bird).
• "Greatest Sports Teams of All Time": The concept of "greatest" is highly subjective, based on different metrics (e.g., number of championships, dominance in an era, fan popularity), so there's no single, universally accepted prototype as different people will have different ideas of what a "greatest" sports team looks like.
• "Feelings of Parents When Seeing Child for the First Time": While emotions are complex, there are common emotional prototypes like overwhelming love, joy, and awe that many parents report, so a prototype can be conceptualized.
• "Fuel Efficient Cars": There are objective measures (e.g., miles per gallon, liters per 100 kilometers) to define fuel efficiency, and a prototype like a Toyota Prius (a well - known fuel - efficient car) can be identified.

Answer:

B. Greatest Sports Teams of All Time