in a 14 weeks study with oral administration via gavage of 300 mg vanillin/kg to rats, twice weekly, no adverse effects were observed.

How would the previous sentence be correctly capitalized?
Answer: In a 14 weeks study with oral administration via gavage of 300 mg vanillin/kg to rats, twice weekly, no adverse effects were observed.
the software then scans the computer and displays all the drives and devices connected to the system

How would the previous sentence be correctly capitalized?
Answer: The software then scans the computer and displays all the drives and devices connected to the system
start > products > hydrant system

How would the previous sentence be correctly capitalized?
Answer: Start > Products > Hydrant system
it is important to measure the bathroom accurately and make sure you double check the measurements as every little bit counts.

How would the previous sentence be correctly capitalized?
Answer: It is important to measure the bathroom accurately and make sure you double check the measurements as every little bit counts.