The correct answer is (a).
Under Sunni Law, the share of a son in his father’s property except land after death of father is 1/3 of the property. This is because the son is considered to be one of the primary heirs, along with the wife and daughter. The primary heirs are entitled to a fixed share of the inheritance, regardless of the size of the estate.
The other options are incorrect because they do not reflect the share of a son in his father’s property under Sunni Law. Option (b) is incorrect because it states that the son is entitled to 1/2 of the property. This is not correct, as the son is only entitled to 1/3 of the property. Option (c) is incorrect because it states that the son is entitled to 3/4 of the property. This is not correct, as the son is only entitled to 1/3 of the property. Option (d) is incorrect because it states that there is no specific share for the son. This is not correct, as the son is entitled to 1/3 of the property.
I hope this helps! Let me know if you have any other questions.