Which of the following is an example of qualitative data?

a. the fish swam in a zigzag motion.
b. the contents of the stomach are mixed every 20 seconds.
c. the temperature decreased from 20 degrees c to 15 degrees c.
d. the six pairs of robins hatched an average of three chicks.

now i'm pretty sure it's a but i was thinking c as well, pls

the truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey.

the backbone of the dna and rna compound is sugar phosphate.