The correct answer is D. all of the mentioned.
The global options for figures in knitr are:
- fig.height: The height of the figure in inches.
- fig.size: The size of the figure in inches.
- fig.breadth: The width of the figure in inches.
These options can be used to control the size and position of figures in a knitr document.
For example, to set the height of a figure to 2 inches, you would use the following code:
knitr::opts_chunk$set(fig.height = 2)
To set the size of a figure to 2 inches by 3 inches, you would use the following code:
knitr::opts_chunk$set(fig.size = c(2, 3))
To set the width of a figure to 3 inches, you would use the following code:
knitr::opts_chunk$set(fig.breadth = 3)
These options can also be used to control the placement of figures in a knitr document. For example, to place a figure at the top of the page, you would use the following code:
knitr::opts_chunk$set(fig.position = "top")
To place a figure at the bottom of the page, you would use the following code:
knitr::opts_chunk$set(fig.position = "bottom")
To place a figure in the middle of the page, you would use the following code:
knitr::opts_chunk$set(fig.position = "center")
These options can be used to customize the appearance of figures in a knitr document.