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Which of the following traversal algorithms prints out the contents of a valid binary search tree sorted in ascending order?

What is the height of the following Binary Tree counting the number of nodes (instead of counting edges)?                     ╔═══╗                                ║ h ║                                ╚═╤═╝                      ┌───────────┴───────┐              ╔═╧═╗               ╔═╧═╗            ║ c ║               ║ k ║            ╚═╤═╝               ╚═╤═╝          ┌───┴───┐           ┌───┴───┐      ╔═╧═╗   ╔═╧═╗       ╔═╧═╗   ╔═╧═╗    ║ b ║   ║ d ║       ║ j ║   ║ p ║    ╚═╤═╝   ╚═╤═╝       ╚═══╝   ╚═══╝  ┌───┘       └───┐                  ╔═╧═╗           ╔═╧═╗                ║ a ║           ║ f ║                ╚═══╝           ╚═══╝   

What is the worst-case runtime complexity of the remove() operation in a binary search tree (NOT necessarily balanced), given problem size N is the total number of elements stored in the tree?

Which of the following trees is a VALID binary search tree?

The ______________________ System (DNS) is a worldwide service that resolves host names to IP addresses. This facilitates proper communication between computers.

Mrs. Jackson has Type A blood but she is not sure if she is homozygous or heterozygous. Mr. Jackson is completely unsure of his blood type. Their children have the following blood types: Phillip has Type O blood, Tom & Blake have type A blood, Lydia has type B blood and Percy has type AB blood. Use A, B, and O to symbolize the alleles. What is Mrs. Jackson’s genotype? [genotype1] What is Mr. Jackson’s genotype? [genotype2]

   Which gametes above have the normal number of chromosomes? [1] Which gametes above have the abnormal number of chromosomes? [2]  

A pea plant with red flowers is test crossed; half of the resulting progeny have red (R) flowers, whereas the other half have white (r) flowers. The genotype of the test-crossed parent was

Which scale of measurement organizes data into mutually exclusive categories that are rank ordered, such as a patients periodontal stage classification? 

Which of the following sampling techniques selects every ‘4th’ subject in a group of second grade children?