at which jewish holiday would someone eat matzo at a seder?\no exodus\no yom kippur\no rosh hashanah\no…

Brief Explanations:

Matzah is a symbolic food eaten during the Seder, which is a ritual meal that is a central part of the Passover celebration. Passover commemorates the Israelites' liberation from slavery in Egypt. Exodus is the event being commemorated, not a holiday. Yom Kippur is the Day of Atonement and Rosh Hashanah is the Jewish New - Year, neither of which involve eating matzah at a Seder.

Answer:

D. Passover