Question

a new technique used to root roses more quickly is called ______.
a. stem inserting
b. rushing
c. stenting
d. all of the above

Explanation:

In horticulture (a subfield of Biology, which is under Natural Science), the technique to root roses more quickly is known as stenting. Stem inserting and rushing are not standard terms for this, and "all of the above" is incorrect as only stenting is the correct technique.

Answer:

c. stenting