Help please According to the data what kind of substance is gastric juice?

A.
it is a weak acid since the blue litmus paper turns red and the pH is 1.7

B.
it is a strong base since the blue litmus paper turns red and the pH is 1.7

C.
it is a strong acid since the blue litmus paper turns red and the pH is 1.7

D.
it is a weak base since the blue litmus paper turns red and the pH is 1.7

In what way do investigations build scientific knowledge? the results of investigations lead to questions that cannot be tested. they reflect the opinions and social values of scientists, ensuring valid information. the results of investigations lead to new questions, which lead to new investigations. they are not influenced by the research of earlier scientists, so they are able to address gaps in understanding. i