What type of library consisting of common routines or data is used to support the development of windows applications?

Dynamic link library. In Windows and some different personal data processing machine operating systems, the system routines for managing exact jobs such as interacting with specific I/O instrument are called dynamic link library routines. These routines are dynamic because their data are not actually loaded into memory until the early time they are called.

yes we can change both the color of the value of a cell as well as background color of a cell at the same time .

as we know that excel sheet consists of columns and rows.

and intersection of column and row is called cell.

we can change color of the cell and background of the cell at the same time.

hence the statement that

can a person change color of the cell and background of the cell at the same time is true.