B. An increase in knowledge as well as written books
Answer:
make a decision about the stimulus.
Explanation:
Donders wanted to find out the level of cognition that was required in order to react to a stimulus. Cognition is the act of receiving a stimulus and understanding it completely.
The reaction time of various stimuli were noted and analyzed. The stimuli differed by their level of complexity. A longer time would indicate that the brain was taking longer to complete the cognitive processes. This was one of the first experiments in the field of cognitive psychology.
Many advances in metallurgy and tool making were made across the entirety of ancient Africa. These include steam engines, metal chisels and saws, copper and iron tools and weapons, nails, glue, carbon steel and bronze weapons and art
