Question

what part of the pedigree is the arrow pointing to? pedigree diagram with arrow

Explanation:

In a pedigree, a line connecting two individuals represents a marriage. When the two individuals are related (as indicated by their placement in the family tree), it is a consanguineous marriage. The arrow is pointing to a marriage line where the two individuals are likely related (given the structure of the pedigree above them), which fits the definition of consanguineous marriage. The other options can be ruled out: there are offspring (so "did not produce offspring" is wrong), and there are both male and female offspring (so "only male offspring" is wrong). "Engagement" is not a standard term in pedigree notation for the line - marriage is.

Answer:

consanguineous marriage