Howard's commercial property was condemned by the city government to expand a public park. Which date is the beginning of the treat or imminence of condemnation?

a$)$ On March $1,$ Howard notices a survey team from the public parks system to the neighborhood taking measurements and photos.

b$)$ On August $5,$ the city council holds a private meeting to discuss park expansion options.

c$)$ On September $30,$ the city council holds a televised press conference to announce the park expansion plan, in which the council presented a map that identifies which properties will be taken for the expansion,

d$)$ On November $10,$ Howard receives a condemnation award and transfer his property.