A, b, c or d? idk if its b just cause i i dont think anything goes back to the president after a veto is overridden

The chart shows four articles read by the students in a science class

Marcy tests a solution with a strip of blue litmus paper. the paper turns red. the solution is acidic basic neutral

1.3.3 quiz: primary and secondary sourcesquestion 4 of 102 pointsa secondary source is reliable and credible if the person who created thesource is an expert on the topic, is educated and respected in the field ofstudy, and: