What organizational patter is best to use when a piece of writing moves from one subject to another

What excerpt from a student essay maintains the most objective tone

Which of the following is a secondary source? o a biography of a playwright ob. historic photograph o c. antique weapon od. census data and statistics

Hur ! asap what is the structure of the following sentence? although i have already visited africa, i would certainly like to return. a) compound b) compound-complex c) complex d) simple