A) When a person has a full-prescription-strength pain relief from a physician
The factors which promoted the development of new forms of entertainment were (A). The new middle class had leisure time and extra money.
With more leisure time and money to spend, middle class people turned to alternate and upcoming forms of entertainment such as dance halls, carnival rides and professional sports.
There is an envelope marked with the instructions that it is not to be opened until the death or disappearance of Dr. Jekyll. This implies that Dr. Lanyon knew something secret, but was unwilling to reveal it at first. He waited until there was no more "hope" of Dr. Jekyll staying normal.
I'd say that it's personification. That'd be the main choice, but since it says two options, it would also be an idiom.
<span>They make the page look more professional</span>
