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>
<span>Good Morning!
The differences between the rock arts, those made by individuals known as "prehistoric", are in the environment in which they found themselves. Africans, for example, drew animals that appear on the African continent, such as lions and deer, while Americans often draw other animals, such as capybaras, anteaters, and so on.
The main influence, therefore, lies in the environment, in which the nature of each space offers differently.
Hugs!</span>
Answer:
Its pattern
you can clearly tell theres a pattern going on here, theres no balance or movement
Third choice would be the correct answer
That would be a minor 3rd as D (in the key of D major anyway) is the root or tonic, and F is the 3rd(minor).
