Its the last one the answer is D
technological developments: biotechnology Biotechnology can potentially benefit mankind by leading to the discovery of new drugs and vaccines. But biotechnology research can also have unintended and dangerous outcomes, so government regulation is necessary. At the same time, private enterprise should be allowed to speed up research and innovation in this vital industry, with financial benefits and philanthropic objectives as concurring goals.
energy and the environment: The 2010 oil spill in the Gulf of Mexico caused virtually irreversible damage to the marine environment. This disaster calls into question the proper role of the national government in regulating industry that may have an adverse effect upon the environment.
The events did NOT occur in British India in the year 1919 was the Gandhi started a second resistance campaign and marched 400 kilometers to the sea in protest of the salt tax.
so your answer is A.Gandhi started a second resistance campaign and marched 400 kilometers to the sea in protest of the salt tax.
hope that helps