The correct answer is: D. Neither I nor II is strong
Argument I is not strong because it appeals to emotion rather than reason. The statement that Indian scientists must “serve the motherland first” is based on the assumption that India is the only place where they can make a difference, which is not necessarily true. There are many other countries where Indian scientists could make significant contributions.
Argument II is not strong because it dismisses the potential contributions of Indian scientists working abroad without providing any evidence to support its claim that India has “enough talent.” It is possible that there are Indian scientists working abroad who could make significant contributions to India, but this argument does not address that possibility.
In conclusion, neither argument I nor II is strong.