when booking for more than 8 adults, different payment policies apply.

How would the previous sentence be correctly capitalized?
Answer: When booking for more than 8 adults, different payment policies apply.
a concerted effort is necessary to build on europe's promising record in innovation tackling global challenges such as climate change. the gender gap in science and research must be closed.

How would the previous sentence be correctly capitalized?
Answer: A concerted effort is necessary to build on Europe's promising record in innovation tackling global challenges such as climate change. The gender gap in science and research must be closed.
i have been deeply immersed in contemplation - the infinite god and all that - whilst putting measurements of convenience in their place.

How would the previous sentence be correctly capitalized?
Answer: I have been deeply immersed in contemplation - the infinite god and all that - whilst putting measurements of convenience in their place.
it is very easy and accurate, as concerned money and time.

How would the previous sentence be correctly capitalized?

Answer: It is very easy and accurate, as concerned money and time.