Noun ,pronoun,gerund or clause the "object" of the preposition.
Science is the study of the natural world based through experiments and observation. Pseudoscience on the other hand is a system of theories, assumptions, and methods that are regarded as scientific. They both present information but Science is based on facts while Pseudoscience does not adhere to any scientific method.
The answer is A. if the dark thing is coming after the children.
True. a counterclaim makes someone go against their original statement to a go/follow a different one
A. to highlight how remarkable Curie's later achievements were, considering her difficult beginnings