A sheet of a FBD consists of:

A) function blocks joined together with wires.
B) a series of input and output blocks.
C) gate symbols with connecting input and output wires.
D) interconnected series of blocks containing circuit schematics.

Sheets

Flat pieces of material, or in the context of software, a single page within a workbook or document.

Function Blocks

Software components in automation and control systems that encapsulate specific functions or programming logic, designed for easy reuse and integration.

Circuit Schematics

Diagrams that represent the electrical connections and functions of a circuit or system, using standardized symbols to detail the components involved and their interconnections.