Assertion (A) : Breast-feeding is advised by the doctor as it is essential for the new borns. Reason (R) : Colostrum secreted by the mother during initial days of lactation has abundant antibodie s containing IgE and IgG.

The correct option is: Assertion (A) is true, but Reason (R) is false.

Let us analyze both the Assertion and the Reason step-by-step to understand why this option is correct.

1. Analysis of Assertion (A):
Doctors strongly advise breast-feeding for newborns because breast milk is the ideal source of nutrition. It is easily digestible and contains a perfectly balanced mix of nutrients essential for the healthy growth and development of the infant. Additionally, it helps establish the newborn's early immune defense. Therefore, the statement "Breast-feeding is advised by the doctor as it is essential for the new borns" is true.

2. Analysis of Reason (R):
During the first few days of lactation, the mother's mammary glands secrete a yellowish fluid called colostrum. Colostrum is extremely rich in nutrients and antibodies that help build passive immunity in the infant. However, the primary and most abundant antibody found in colostrum is IgA (Immunoglobulin A), which helps protect the infant's respiratory and digestive tracts. It does not contain abundant quantities of IgE (which is involved in allergic reactions) or IgG (which is the primary antibody transferred across the placenta during pregnancy). Thus, the statement that colostrum has abundant antibodies containing IgE and IgG is false.

Conclusion:
Because the Assertion is a scientifically correct statement while the Reason is incorrect, we conclude that Assertion (A) is true, but Reason (R) is false.