To solve this problem, we need to analyze each statement regarding the female reproductive cycle:$\newline \bullet$A. In non-primate mammals, cyclical changes during reproduction are called oestrus cycle.$\newline$ - This statement is correct. Non-primate mammals exhibit an oestrus cycle, which is different from the menstrual cycle seen in primates.$\newline \bullet$B. First menstrual cycle begins at puberty and is called menopause.$\newline$ - This statement is incorrect. The first menstrual cycle is called menarche, not menopause. Menopause refers to the cessation of menstrual cycles, typically occurring later in life.$\newline \bullet$C. Lack of menstruation may be indicative of pregnancy.$\newline$ - This statement is correct. Amenorrhea, or the absence of menstruation, can be a sign of pregnancy.$\newline \bullet$D. Cyclic menstruation extends between menarche and menopause.$\newline$ - This statement is correct. The menstrual cycle occurs from menarche (the onset of menstruation) to menopause (the end of menstruation).$\newline$Now, let's identify the correct statements:$\newline$A, C, and D are correct.$\newline$Therefore, the most appropriate answer is Option 4: A, C, and D only.