Need asap by the late 1800s, economic arguments for imperialism had given way to other considerations. what were those considerations?

I believe it would be the industrial revolution.
Since the industrial revolutions, more job opportunities were opened up beside having to take care of noble's land in feudalistic system.
This shift the economy into a free market system where the majority of wealth fall to the hand of successful factory owners.

a. an IRB must be consulted to make recommendations regarding ethical dilemmas.

Explanation:

Scientific values: It is considered as values that are being surveyed, utilizing a specific scale from "zero to ten", and have been asked to rate curiosity, attentiveness, objectivity, humility to evidence, courage, meticulousness, collaborative, honesty, skepticism, and perseverance in regards to their significance for "scientific research".

Ethical dilemmas are considered as specific situations whereby there is a hard choice to be formed between two or more than two options, neither of which tends to resolve the situation consistently with established ethical guidelines.

In the question above, the given statement represents option-a as the correct answer.