Examine the evidence you gathered from your research. Use this evidence to formulate a thesis statement or a claim that says something general about how the field you've chosen — mathematics, astronomy, medicine, or technology — advanced during the Islamic Golden Age. Then write an explanatory essay that supports the thesis statement or claim by presenting researched facts about specific innovations in that field. Express the information in your own words, but cite each source the information comes from.

option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation:

b toward the volcano.landward. the landward side of something is the side nearest to the land or facing the land, rather than the sea.