New Zella article called: how chromosome mutations occur. There are four questions on the quiz I can't get any of them. Please help

Change in the structure of chromosome.

Explanation:

Chromosome structure mutations are the changes that occur in the structure of chromosomes rather than just individual nucleotides. These mutations occurs due to the errors that happens in cell division that leads to the breaking in section of a chromosome, which can be duplicated or move onto another chromosome. Chromosome mutation is the process of change in the chromosomes that occurs due to the rearranged chromosome parts and  abnormal numbers of individual chromosomes.