The statement that is true about the sovereign state is letter D which is its has borders that are constantly changing. A sovereign state is a state with outskirts where individuals live, and where an administration makes laws and converses with other sovereign states.
The correct answer is management.
Answer:
An Instructional material is a device developed or acquired to assist or facilitate teachers in transmitting, organized knowledge, skills and attitude to the learners within an instructional situation. It is an indispensable tool in the teaching and learning process.