Question No. 6Marks : 1.00    Hill-climbing search           Breadth-first search           Forward state-space search           Depth-first search

It seems like you're asking for explanations of different search algorithms used in computer science. Here they are:

1. Hill-climbing search: This is a local search algorithm that continuously moves in the direction of increasing value (or 'uphill') to find the peak of the mountain or the best solution to the problem. It's called 'hill-climbing' because it's similar to climbing to the peak of the mountain.

2. Breadth-first search (BFS): This is a search algorithm used for traversing or searching tree or graph data structures. It starts at the root and explores all the neighboring nodes at the present depth prior to moving on to nodes at the next depth level.

3. Forward state-space search: This is a strategy where you generate a tree of possibilities, starting from the initial state and expanding states by applying all possible actions and generating new states.

4. Depth-first search (DFS): This is another algorithm for traversing or searching tree or graph data structures. The algorithm starts at the root node and explores as far as possible along each branch before backtracking.

Each of these search algorithms has its own strengths and weaknesses, and the choice of which one to use will depend on the specific problem you're trying to solve.