A binary search tree is a binary tree where:Group of answer choicesThe left subtree contains values less than the root, and the right subtree contains values greater than the root.Both b and d.It is always a complete binary tree.The data in the tree is stored in a specific order.

The correct answer is: The left subtree contains values less than the root, and the right subtree contains values greater than the root.

Here's why:

A binary search tree (BST) is a type of binary tree where each node has a comparable value, and:

1. The value of the key of the left subtree is less than the value of the parent node's key.
2. The value of the key of the right subtree is more than the value of the parent node's key.

This property makes the binary search tree an ordered or sorted binary tree.

The other options are incorrect because:

• A binary search tree is not always a complete binary tree. A complete binary tree is a binary tree in which every level, except possibly the last, is completely filled, and all nodes are as far left as possible. This is not a requirement for a binary search tree.
• The data in the tree is stored in a specific order is a vague statement and doesn't accurately describe the properties of a binary search tree. While it's true that the data is ordered, it's more accurate and specific to say that the left subtree contains values less than the root, and the right subtree contains values greater than the root.