Correct.
See chapter 4 of the VFRG.
Incorrect.
The correct answer is 'any of the above'.
See:
The correct answer is '(b) or (c)'.
The correct answer is 'any area which is assessed as being suitable as an HLS'.
See chapter 5 of the VFRG.
The correct answer is 'within 10 NM and up to a height that could result in a conflict with operations at that aerodrome'.
The correct answer is 'a white cross'.
The correct answer is '800 m visibility clear of cloud and at a speed to avoid obstructions'.
The correct answer is 'when first establishing contact on any frequency'.
See chapter 8 of the VFRG.
The correct answer is '15 kt'.
See page 16 of AC 91-29.
The correct answer is 'all of the above'.
See page 20 of AC 91-29.
The correct answer is '30 m – typically 2-3 rotor diameters'.