What was the oldest form of biotechnology a. selective breeding b. hybridization c. cloning d. recombinant dna

A. selective breeding

Explanation:

ody ssey assignment 18 page 2 (if printed) Introduces Classical biotechnology first and it's ancient first use of selective breeding. Corn has been grown through selective breeding for more than 4,000 years. etc.

Then second, introduces a TYPE of selective breeding that came about called hybridization, with designer dogs examples...

plus it was correct graded

ice cream

explanation:

the last one: artificial selection/genetic engineering

plant breeding is modifying the genetic composition of the plant - but this isn't cloning (which is specifically introducing a gene into a genome). but you are artificially selecting for the phenotype that you want.

the second one is literally genetic engineering - the gene would have been cloned first and then inserted or genetically engineered into the new plant cell (the cotton).