Which two cave formations join to form a column? a. a flowstone and a drapery b. a soda straw and a drapery c. a stalactite and a stalagmite d. a flowstone and a stalagmite

A stalactite and a stalagmite are the two cave formations that join to form a column. The correct option among all the options that are given in the question is the third option or option "c". Speleothems are considered as the most common type of stalactite. I hope the answer helps you.