The image contains a question regarding an assembly line task sequence and timing, asking to:

a$)$ Draw the technological precedence diagram.

b$)$ Calculate the cycle time.

c$)$ Calculate the minimum number of workstations.

The task information provided in the image is as follows:

Task: A$,$ B$,$ C$,$ D$,$ E$,$ F$,$ G$,$ H$,$ I, J$,$ K$,$ L

Immediate predecessor: $-,$ A$,$ B$,$ B$,$ B$,$ C$,$ D$,$ E$,$ F$,$ G$,$ I, F$,$ H$,$ J$,$ K

Task time $($seconds$)$: $12,6,6,2,2,12,7,5,1,4,6,7$