(HELP ME SIGNAL PHRASES ENGLISH ASSIGNMENT) Which of the following best describes the proper use of a signal phrase?

1) A signal phrase may appear before, in the middle, or after researched information you are sharing.

2) A signal phrase should appear before the researched information you are sharing.

3) A signal phrase should appear in the middle of the researched information you are sharing.

4) A signal phrase should appear after the researched information you are sharing.

Magnesium is the fourth most abundant mineral in the body and is essential to good health. magnesium is needed for more than 300 biochemical reactions in the body. it maintain normal muscle and nerve function, keep bones strong, keep one’s heart rhythm steady, and supports a healthy immune system. magnesium also regulate blood sugar levels, promotes normal blood pressure, and may play a role in energy metabolism and protein synthesis. doctors and scientists are trying to determine whether magnesium may play a role in preventing and managing disorders such as hypertension, cardiovascular disease, and diabetes. which is the main idea of this paragraph? a. the role of magnesium in human nutrition is being studied intensely. b. magnesium may be related to the body’s metabolism and other healthy functions. c. magnesium appears to contribute to hypertension, cardiovascular disease, and diabetes. d. magnesium and a healthy immune system are separate diseases.

Take some time to create a cultural inventory. note the components of culture that have defined you and list as many as possible here. then write about the ways your unique culture affects your communication, i need i don't know how to start it off .

Which big-picture idea comes logically from these details?