Question

9. Volcanoes which have not erupted since remote geological times when
they were active.

Dormant volcanoes
or Extinct volcanoes​

Answer 1

Answer:

Dormant volcanoes

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Answer 2

Answer: Volcanoes which have not erupted since remote geological times when Extinct volcanoes​  

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 Extinct Volcanoes ⇒

In contrast to the dormant volcano, an extinct volcano has not erupted over the last ice age, which ended approximately 10,000 years ago, and is not expected to erupt again in the future. Although an extinct volcano is believed to lack the ability to ever erupt again, several geographic and seismic records indicate that this assumption is not always true. An example of this is Four-Peaked Mountain in Alaska, mentioned above. This volcano was believed to be extinct until 2006, when it began exhibiting signs of activity, and is now classified as dormant. This definition of extinct is based on the calculated assumption that these volcanoes no longer have a source of lava, but this cannot be accomplished with absolute certainty.

Volcanoes believed to be extinct around the world include: Zuidwal Volcano (Netherlands); Emperor-Seamount chain (Hawaii, United States); and Mount Kulal (Kenya)