Why is it when I say I dont know...people get upset...Can a 15 year old not forget stuff

Look at this painting by cimabue. this painting demonstrates the use of

What is a system which kings rulers and other wealthy individuals provided financial and other support to artists? feudalism commissions partronage all of the above !

Which music form has a pattern that appears as a-b-a-c-a or a-b-a-c-a-b-a? a. sonata ob. rondo c. minuet d d. theme and variations e. quartet