Homo erectus is known for which of the following discoveries?
a. fire
b. money
c. plow
d. wheel

The correct answer is A. Fire

Explanation:

The Homo Erectus was a species that is believed is the ancestor of modern human beings or homo sapiens and that lived 1.8 million ago in Africa, Europe, and Asia. This ancestor of human beings was responsible for the development of tools made of stone and more importantly, the use of fire which has been proved as multiple artifacts and burnt materials that belong to the era in which Homo Erectus lived have been found. Also, it is believed this was the first species in the human lineage that lived in hunter-gatherer societies which allow them to hunt together and that use fire for warmth, protection, and cooking. Therefore, the Homo Erectus is known mainly for the discovery and use of fire.

In 1000 CE Guido D'Arezzo made many improvements in music theory. He first improved and reworked standard notation to be more user-friendly by adding time signatures. Then he invented solfege. This is the vocal note scale: do, re, mi, fa, so, la ,ti, do.