To determine which option contains only primary sources, we need to clarify what constitutes a primary source. A primary source provides direct or firsthand evidence about an event, object, person, or work of art. Primary sources can include artifacts, documents, and other original materials.
Looking at the provided options:
A. Wall paper, radiators, tools, and books about the time. (Books about the time are secondary sources, as they analyze or interpret primary sources.)
B. Radiators, tools, and books from the time. (Books from the time could be considered primary sources if they are original works from that time period, making this option mostly primary.)
C. Tools from the time, books from the time, and magazines about the time. (Magazines about the time are secondary sources, making this option also contain secondary sources.)
D. Documents, maps, weapons, and movies and the events. (Movies can be primary sources if they are original documentation of events; however, without clarification, this option is ambiguous.)
Given the descriptions, option B (radiators, tools, and books from the time) is the best choice as it contains primary sources throughout (as long as the books are original works from that time).
Final Answer: B. radiators, tools, and books from the time.