Hello, I'm an expert in English grammar and usage. I'm here to help you with your question about the correct form of the word "student" when used in a possessive context. Let's dive into the details.

Firstly, it's important to understand the concept of possessive forms in English. The possessive case is used to show ownership or a relationship between two things. For example, "John's book" means the book belongs to John. In English, possessive forms are created by adding an apostrophe followed by an "s" ('s) to the end of a singular noun. For plural nouns that already end in "s," we just add an apostrophe at the end.

Now, let's apply this to the word "student." When we want to show that something belongs to a student or is associated with a student, we use the possessive form. If we're talking about one specific student, we would say "the student's book," meaning the book belongs to that one student. If we're talking about students in general, we would say "the students' books," meaning the books belong to multiple students.

The phrase you provided, "the student's responsibilities," is correct when referring to the responsibilities of one particular student or the generic "prototypical" student. The use of the apostrophe-s ('s) indicates possession, showing that the responsibilities belong to the student.

Here's a breakdown of when to use "student's" and "students'":

1. Use "student's" when referring to something that belongs to or is associated with one student:
- The student's book is on the desk.
- The student's uniform needs to be washed.

2. Use "students'" when referring to something that belongs to or is associated with multiple students:
- The students' books are in the library.
- The students' uniforms are the same color.

It's worth noting that the apostrophe is used to show possession, not just to make a noun plural. So, even if you're talking about the responsibilities of multiple students, you would still use the plural form "students" without an apostrophe if you're not indicating possession:
- The responsibilities of the students are to be completed by the end of the week.

In conclusion, the correct form depends on whether you're referring to one student or multiple students and whether you're indicating possession. "Student's" is correct with an apostrophe when it's possessive and singular, while "students'" is correct with an apostrophe when it's possessive and plural.

Now, let's move on to the translation part.

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Phrase (a) is not correct. It has no apostrophe, and possessive forms of nouns must have an apostrophe, in both singular and plural. the student's responsibilities (if the idea is one particular student, or the generic "prototypical" student).read more >>