Which of these is an example of a labor law?
a. a limitation on building types in an industrial area.
b. a regulation against production limitation.
c. a requirement that products be truthfully labeled.
d. a restriction on when a union may call a strike.

D. A restriction on when a union may call a strike.

Explanation:

A labor law is concerned with the establishment of labor relation framework that provides peaceful relations between the employees and the organization. It usually includes the rules for forming a union. In this condition the union of labor or workers become a bargaining agent and conducts strikes and lock-outs to fulfill it's needs and present their grievances to the authorities.

The answer is D. A restriction on when a union may call a strike.

Explanation:

c.the charges if the proton and electron and gravity

cell differentiation  is how generic embryonic  cells  become specialized  cells. this occurs  through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a  cell  functions.

explanation: