Clear-cutting limits the extent to which forests are renewable because . A.
it does not involve reforesting cleared areas
B.
it calls for new trees to be planted immediately when others are cut down
C.
it is heavily focused on the sustainability of forests
D.
it protects forests from being used

The correct answer is - b. it calls for new trees to be planted immediately when others are cut down.

Explanation:

Clear-cutting is a technique for reforestation or regeneration by harvesting trees in which all trees are cleared from a site and another, even-age remain of timber is developed.  

This is the practice of reforesting in which all the trees in a zone are consistently chopped down. It is utilized to make a specific kind of timberland environment and furthermore for advancing select species.

The correct answer is - b. it calls for new trees to be planted immediately when others are cut down.

the answer is a. now keep my answer here.