(US 59) The Soviet response to the United States forming NATO with the democratic European countries was forming
with the communist European
countries.
O SEATO
the Warsaw Pact
Satellite Country Union
O The Axis Powers

The Soviet response to NATO was the Warsaw pact

Explanation:

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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:

i believe the answer to your question is b. pay your bills early