As an expert in the field of linguistics and communication, I can provide you with a detailed answer to your question regarding the correct usage of "which" and "its."

In English, "which" is a relative pronoun used to introduce a clause that provides additional information about a noun mentioned previously. It often refers to a non-specific item within a group or to ask a question about preference or choice. For example:

- I can't decide which book to read next.
- She wore the dress which was blue.

On the other hand, "its" is a possessive pronoun that shows ownership or belonging. It is used to indicate that something belongs to or is associated with a previously mentioned noun. For example:

- The dog wagged its tail.
- The company has expanded its operations.

To summarize, use "which" when you are asking a question or providing non-defining information about a group or choice, and use "its" to show possession or association.

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Hint: The word involved is small and it's contained in this sentence. Yet the two rules are actually quite easy to remember. Rule 1: When you mean it is or it has, use an apostrophe. Rule 2: When you are using its as a possessive, don't use the apostrophe.read more >>