"Like sparks from a blacksmith's window" refers to the sparks that happen when a blacksmith is working. The meaning depends on the context. The context should usually be something like anger, exploding anger, or it could be excitement...
D. Skinner
An operant conditioning chamber is a laboratory apparatus used to study animal behavior. The operant conditioning chamber was created by <u>B. F. Skinner </u>while he was a graduate student at Harvard University. It may have been inspired by Jerzy Konorski's studies.
The answer is Secured credit card. It is used to pay the needed materials but she needs to pay it every month. This has interests so she needs to consider her debts and the profit she can get from her business.
What was your question about Front of The Bus?
C would be your answer there due to it trying to help you visualize the setting
