According to the center for 21st century skills, critical thinking ability includes all of the following skills, except
a. reason effectively
b. solve problems
c. communicate clearly
d. use systems thinking

The correct answer is "C".

Critical thinking is a procedure that involves a detailed analysis of the facts in order to form a judgment that will subsequently lead to a decision. This procedure includes analyzing all the stakeholders involved in a particular situation and the scenarios that would materialize according to one decision or another.

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.