The correct option is A Waldeyer in 1888
Chromosomes were discovered by Hofmeister (1848), studied by Strasburger (1875) and given the present name by Waldeyer (1888) after their staining by dyes like Janus Green. Chromosomes are a thread like structure. It is composed of DNA and protein and it is considered as a carrier of genetic characters from parents to offspring. So, the correct answer is option A.