When conducting a research study attempting to understand what features were most important to automobile consumers, Cary's Research Company used a questionnaire containing questions, with a predetermined set of response options.

structured

Explanation:

conducting research studies mostly requires structured questions to avoid inconclusive results because there would be constant variables that do not have to change and there would be variables that will need to change.

a.indigo and cochineal

b.animal hides

c.silver and gold

e.cacao beans and sugarcane

answer; education;