16 what feature is labeled d in figure 10-1
a. pipe
b. volvanic neck
c. crater***

d. lava flow
17 what feature is labe; ed a in fingure 10-1
a. pipe***
b. volcanic neck
c. crater
d. vent

18 what type of volvano is illustrated in figure 10-1
a. volcanic neck
b. shield volcano
c. cinder cone
d. compostie cone***
the volcano goes with the questions so do report me. i just need and i will give you brainiest crown for two people to answer

16. The correct answer is option C, that is, crater.  

A circular depression around a volcanic vent is known as a volcano crater. This is the region from where the ash, lava, and rock erupts out of a volcano. In the majority of the conditions, the volcano crater is situated at the top of the volcano.  

17. The correct answer is option B, that is, volcanic neck.  

A lava neck or volcanic neck is also known as a volcano plug refers to a volcanic object produced when magma toughens inside a vent on an active volcano. A plug can result in an extreme creation of pressure if the elevating volatile-charged magma is trapped underneath it.  

18. The correct answer is option D, that is, composite cone.  

Composite cone volcanoes also are known as stratovolcanoes. These are the cone-shaped volcanoes comprising of the layers of ash, lava, and rock debris. These volcanoes are grand site and can grow to an elevation of 8000 feet or more.