hi, my name is 18diana and i am 19 years.

How would the previous sentence be correctly capitalized?
Answer: Hi, my name is 18Diana and I am 19 years.
this allows the intelligence of windows to decide the correct software application to open your tbalic400 file.

How would the previous sentence be correctly capitalized?
Answer: This allows the intelligence of Windows to decide the correct software application to open your TBALIC400 file.
get the most out of google enterprise search. whether you need documentation, training or quick answers, there are a range of support options available.

How would the previous sentence be correctly capitalized?
Answer: Get the most out of Google Enterprise Search. Whether you need documentation, training or quick answers, there are a range of support options available.
its role is to improve eu financial management and report on the use of public funds.

How would the previous sentence be correctly capitalized?
Answer: Its role is to improve EU financial management and report on the use of public funds.