Question

Prior to the Industrial Era, pre-1780, ____________ affected Earth's climate because they emitted both aerosols and carbon dioxide into the atmosphere. A) sunspots B) volcanoes C) fossil fuels D) meteorite impacts

Answer 1

See , I may be wrong but according to me the answer should be either volcanoes or fossil fuels

Answer 2

Pre-industrial revolution, volcanoes affected Earth's climate because they emitted both aerosols and carbon dioxide into the atmosphere. Aerosols block sunlight and carbon dioxide is a greenhouse gas, which has a warming effect of Earth's climate.

Volcanoes is the Answer