1. Colour is the visual property of the pigment of an object that is detected by the eye and produced as a result of the way the object reflects or emits light. The human eye is capable of seeing millions of colours, making it one of the most diverse and powerful elements of art.
Each color has three properties—hue, value, and intensity. Hue is the name of a colour. Value is a colour’s lightness or darkness, which is altered when black or white is added. Intensity refers to the intensity of a colour, often measured by boldness or dullness.
Example of complementary colours in art, Hiroshige uses red and green to create contrast.
2. LINE
Line is an element of art defined as the path of a point moving through space. There are many types of line in art. Lines may be continuous or broken, and can be any width or texture. The great variety of line types make them an especially useful tool in artworks.
Example of gesture lines in art, Marino Marini uses big swooshing gesture lines that capture the action and energy of the subject.
3. SHAPE
A shape is an enclosed area of space created through lines or other elements of the composition.
Example of geometric shapes in art, Picasso uses circles, triangles, crescents, and rectangles.
Dante Gabriel Rossetti was an English painter from the 1800's.
The Proserpine is an Oil on Canvas from 1874 and it is said to reflect the artist's personal life and state of mind: he most likely suffered from depression (that is why the expression is sad). He had a nervous breakdown just a few years before creating this painting.
The answer is (d.) choose only the visuals that are easily understood.
The main purpose of the visual aids is to help improve the understanding of the audience to the presentation. It clarifies and reinforce the key points of the topic. So it's important to choose the appropriate visual that could help the presentation easily understood.
