In "the red-headed league," why does sherlock holmes beat upon the pavement outside of jabez wilson's office?

a.
he wants to find out how strong his walking stick is in case he needs to protect himself.

b.
he wants to find out where john clay is hiding in saxe-coburg square.

c.
he wants to find out if the ground under the pavement has been dug out.

d.
he wants to find out whether wilson can hear him inside the office.

this statement is true.

forests are public goods, available for everybody. when usage of such a good becomes interesting for consumers and its usage increases, there can be a risk of overexploitation. it is a non rival good therefore, if one person consumes the good it does not reduce the availability for subsequent consumers.

these caracteristics require the establishment of measures in order to prevent the destruction of a commonly owned space, for example, to restrict the amount of people that have access to the same time.

answer; severe;