Arrange the following directive principles of state policy in a sequential order as mentioned in the Constitution of India.
A. Equal pay for equal work for men and women
B. To secure a uniform civil code throughout the country for all citizen
C. To promote equal justice and to provide free legal aid to the poor
D. Separate the judiciary from the executive in the public services
Choose the correct answer from the options given below :

Correct option is B

Let's arrange the given Directive Principles of State Policy in sequential order as they appear in the Constitution of India, based on their respective Articles:

A. Equal pay for equal work for men and women: This is covered under Article 39(d).

B. To secure a uniform civil code throughout the country for all citizens: This is covered under Article 44.

C. To promote equal justice and to provide free legal aid to the poor: This is covered under Article 39A. (Note: Article 39A was added by the 42nd Amendment Act, 1976, but it is placed after 39 in the sequence.)

D. Separate the judiciary from the executive in the public services: This is covered under Article 50.

Now, let's arrange them sequentially based on their Article numbers:

A. Equal pay for equal work for men and women (Article 39(d))

C. To promote equal justice and to provide free legal aid to the poor (Article 39A)

B. To secure a uniform civil code throughout the country for all citizens (Article 44)

D. Separate the judiciary from the executive in the public services (Article 50)

Therefore, the correct sequential order is (A), (C), (B), and (D).