According to Christopher Baugh, the invention of electric lighting beginning in the 1880s allowed for the exposure of the inherent artificiality of both the carpentered and painted stage forms, making them look more two-dimensional especially with respect to their three-dimensional scenic partners.
Prior to the use of electric lighting, gas or oil was used as the fuel to produce soft and gentle lighting that allowed for the blending of the carpentered and painted stage forms with the three-dimensional elements in the stage.
<em>Answer:</em>
<em>B. optimism </em><em> </em>
<em>Explanation:</em>
<em>Optimism</em><em> is determined as an attitude that can affect an individual's physical and mental health positively. It is also responsible for increasing an individual's longevity and reducing his or her stress. However, various psychologists believed that optimism generally signifies the belief of an individual that different outcomes of experiences or events will be considered as positive.</em>
<em>As per the question, Lydia exemplifies optimism.</em>