Here are the answers to your questions:
A) What is the act of viewing data in a graphical form referred to as?
Answer: visualization
A) How can we visualize datasets with three variables that are of focus?
Answer: We need to resort to a three-dimensional visualization like 3D plotting.
A) Is data visualization a necessary part of data science nowadays?
Answer: Yes, data visualization has become a necessary part of data science.
A) Which of the following concerns need to be considered when choosing a modeling tool?
Answer: the capabilities and the price