cause and pathogenesis (origination) is unknown (idiopathic)

How would the previous sentence be correctly capitalized?
Answer: Cause and pathogenesis (origination) is unknown (idiopathic)
keep the friendly dog happy by choosing the right foods and supplements, with an emphasis on “food first”.

How would the previous sentence be correctly capitalized?
Answer: Keep the friendly dog happy by choosing the right foods and supplements, with an emphasis on “food first”.
a hobby - starting in my early childhood - is my stamp collection.

How would the previous sentence be correctly capitalized?
Answer: A hobby - starting in my early childhood - is my stamp collection.
the neighborhood is safe and plenty of restaurants, bars, pubs, shops and a supermarket just in front of the building.

How would the previous sentence be correctly capitalized?
Answer: The neighborhood is safe and plenty of restaurants, bars, pubs, shops and a supermarket just in front of the building.