Sure, let's break down the different options available to you in the 'Change Case' feature in Microsoft Word:
1. Sentence case: When you select this option, it will capitalize the first word in a sentence, leaving all other letters in lower case. For instance, if your sentence is "this is an example", it will become "This is an example."
2. Lowercase: If you select 'lowercase', then all the selected text will be converted into lower case. For example, "THIS IS AN EXAMPLE" becomes "this is an example."
3. Uppercase: The 'uppercase' option will change all the text that you've selected into upper case. Therefore, "this is an example" would become "THIS IS AN EXAMPLE."
4. Capitalize Each Word: With this option, the first letter of each word in your selected text will be capitalized, while all other letters will be kept in lowercase. The sentence "this is an example" would therefore become "This Is An Example."
5. Toggle Case: The 'toggle case' option changes all upper case characters to lower case and all lower case characters to upper case. For example, "This Is An Example" would become "tHIS iS aN eXAMPLE."
These are all the options you have available under the 'Change Case' feature in Microsoft Word. They can enhance your writing and help you maintain a consistent style throughout your work.