dozing off in his chair, he dreamt that he was ferried over the river of death, and, taking the straight and narrow way, came at last within sight of the golden city.

How would the previous sentence be correctly capitalized?
Answer: Dozing off in his chair, he dreamt that he was ferried over the River of Death, and, taking the straight and narrow way, came at last within sight of the Golden City.
these plastic types are not assessed to be used in household appliances to any appreciable extent. however, thermoplastic polyurethane types may form part of household appliances.

How would the previous sentence be correctly capitalized?
Answer: These plastic types are not assessed to be used in household appliances to any appreciable extent. However, thermoplastic polyurethane types may form part of household appliances.
there are always deficiencies in certain nutrients, primarily those which take part in sugar metabolism such as zinc, magnesium, chromium, manganese, and other minerals, as well as vitamins primarily of the b vitamin group.

How would the previous sentence be correctly capitalized?
Answer: There are always deficiencies in certain nutrients, primarily those which take part in sugar metabolism such as zinc, magnesium, chromium, manganese, and other minerals, as well as vitamins primarily of the B vitamin group.
go to control panel and select add or remove programs.

How would the previous sentence be correctly capitalized?
Answer: Go to Control Panel and select Add or remove programs.