Sea water when compared to pure water will; a]a lower boiling point and a lower freezing point
b]a lower boiling point and a higher freezing point
c]a higher boiling point and higher freezing point
d]a higer boilng and a lower freezing point

There is no reason to think the results are biased or not conducted properly but you should not assume the results are correct just because they were done in a laboratory so the answer would be c. it is likely to be reliable because the results support the conclusion presented.

Naoh + hbr -> nabr (salt) + h2o ca (oh)2 + 2hbr - - - > ca (br)2 + 2h2o