Answer:
Twice.
Explanation:
Diploid cell may be defined as the cell that contain the diploid sets of chromosome (2X) here X represent the chromosome number. Human are diploid cell and each cell contains the set of a chromosome.
Haploid cells contain a single set of chromosome (X). Human gametes are haploid cells. The diploid cell has twice the chromosome number as haploid cell.
Thus, the correct answer is option (3).