Which of the following is a benefit of shelterwood harvests?
a. they decrease air and water quality.
b. they increase milk and egg production.
c. they allow for regeneration of shade-tolerant species.
d. they remove all canopy cover for a period of time.

Option (C)

Explanation:

Shelterwood harvesting refers to the development of cutting down the forest that results in the formation and evolution of new seedlings of any particular type of species without planting it. It helps in the regeneration of shade-tolerant species. Those plants that have the ability to tolerate the low light levels are generally considered to be the shade tolerance plants. It is also known as the shelterwood cutting and is one of the most convenient and sustainable way of gathering trees of different species and conserving the environment.

Thus, the correct answer is option (C).