A character determined by many genes and does not show discrete variation is known as:

Correct option is C

Quantitative characters (e.g., yield, height) are controlled by many genes and show continuous variation.
(a) Qualitative traits show discrete variation (e.g., flower color).
(b) Threshold traits involve a mix of qualitative and quantitative traits.
(d) Multiple alleles refer to a gene with more than two alleles.