B) herman von helmholtz
The trichromatic color theory<span> began in the 18th century, when </span>Thomas Young<span> proposed that color vision was a result of three different </span>photoreceptor cells<span>. </span>Hermann von Helmholtz<span> later expanded on Young's ideas using color-matching experiments which showed that people with normal vision needed three wavelengths to create the normal range of colors. Physiological evidence for trichromatic theory was later given by </span>Gunnar Svaetichin<span> (1956).</span>
Answer:
through a description of the way they behave
<span>To embrace people in the "arms" of the Catholic Church. </span>
Blues music
Soul music
Indie rock music
K-pop
Country music
A because allows you to scrutinise every part of the image before judging it
