The statement fwrite ( (char*)&objl, sizeof(objl) );

The statement fwrite((char*)&objl, sizeof(objl), 1, fl) writes the data in the object objl to the file fl. The sizeof(objl) expression gives the size of the object, which is the sum of the sizes of all of its members. The (char*)&objl expression is a pointer to the first member of objl. The 1 in the third argument to fwrite specifies that the object is to be written as a single unit.

The other options are incorrect because:

• Option A is incorrect because the member functions of objl are not written to the file.
• Option C is incorrect because the member functions and data of objl are not written to the file.
• Option D is incorrect because the address of objl is not written to the file.