Pressing in the middle of a numbered list creates a new numbered paragraph and automatically renumbers the remainder of the list.
a.[enter]
b.[ctrl]
c.[esc]
d.[alt]

Option a is the correct answer.

Explanation:

In an MS-WORD Document, when the user wants to write some line with the help of bullets or numbers then he needs to press enter when he had completed the first line and wants to proceed for the second line.

The question scenario also suggests the same which is described above. Hence Enter will fill the blank of the question statement. Hence Option 'a' is the correct answer while the other is not because--

Option b suggests about 'control' key, which is used to select or copy or cut if any other key is pressed with it.Option c suggests about 'ESC' key, which is an escape key used to escape some process.Option d suggest 'ALT' key, which is not used in MS-WORD Document for any purpose.

For question 1, i'm a bit stuck between serif fonts or large enough type to read. serif fonts are good fonts to use because their easy to read. but you also need your type be large enough to read. if i had to say what you need to consider most important, i would say d is the answer.  for question 3, i believe the answer is d. it seems most appropriate to do that. on every page or every other page would be too much, and only on the contact page just seems inappropriate.  for question 4, it's probably a. by "color scheme" it doesn't mean just one color, but a set of colors. colors that are complimentary to each other. having too many is too distracting so it's best to limit it as much as possible, but not to the point where your website looks dull.hope this !