What are the correct options for these MS Office (PowerPoint, Word) and assertion/reason questions?

Here are the solutions to the questions:

6. In PowerPoint, the option used to insert a new slide is "New Slide".
The correct option is (A).

7. In MS Word, the "Spelling & Grammar" option is found under the "Review" tab.
The correct option is (C).

8.

i)
Assertion (A): Applying bold formatting makes text thicker and darker. This statement is true.
Reason (R): Bold increases the font size automatically. This statement is false; bold formatting changes the weight of the font, not its size.
Therefore, A is true but R is false.
The correct option is (C).

ii)
Assertion (A): Line Spacing can be adjusted from the Home tab. This statement is true.
Reason (R): It is located in the Paragraph group. This statement is also true, as the Paragraph group is found on the Home tab and contains line spacing options. The reason correctly explains the assertion.
Therefore, both A and R are true, and R is the correct explanation of A.
The correct option is (A).