A researcher is trying to identify whether household substances are basic. Which approach would BEST help investigate whether substances are basic?
A Mix each substance with a weak base and record the results.
B. Test each substance with blue litmus paper.
C. Observe each substance and record its color.
D. Test each substance with red litmus paper.

Listenbase your answer to the question on the information below.nuclear radiation is harmful to living cells, particularly to fast-growing cells, such as cancer cells and blood cells. an external beam of the radiation emitted from a radioisotope can be directed on a small area of a person to destroy cancer cells within the body.cobalt-60 is an artificially produced radioisotope that emits gamma rays and beta particles. one hospital keeps a 100.0-gram sample of cobalt-60 in an appropriate, secure storage container for future cancer treatment.which choice represents the correct product for the beta decay of the co-60? fe-60ni-60fe-61ni-61