Which sentence has the correct subject-verb agreement? those severe weather conditions are a threat. those severe weather conditions is a threat.?

The sentence that has the proper subject-verb alignment is he first option, “those severe weather conditions are a threat.”

This is because the subject, weather conditions, is plural and requires a plural verb. This makes the second option incorrect, as “is” is singular and doesn’t match in number with the plural subject in the sentence. Subjects and verbs in sentences must have the same case and number in order to be grammatically correct.

I hope this helps! :)

Atahualpaemperor of the inca empire who rose to the throne after winning a civil war between him and his brother.  -he refused to become a spanish vassal or christian.-francisco pizarro kidnapped him and demanded a huge ransom.  -pizarro's secretary described him as "a man of thirty years, good-looking and poised, somewhat stout, with a wide, handsome, and ferocious face, and the eyes flaming with blood."-after the ransom was paid, atahualpa was killed by pizarro