At FL50, in which following atmospheric conditions would you expect the value on the aircraft altimeter to be lower than the value of the true altitude?

On an upper wind and temperature chart:

Refer to figure. For an aircraft making an approach to an airfield located in square 3B, the most likely weather conditions are:

An aircraft maintains a constant indicated altitude of 5 500 ft from A (1 050 ft AMSL - QNH 968 hPa) to B (650 ft AMSL - QNH 1016 hPa).Assuming that the altimeter subscale setting remains unchanged at 968 hPa, the height of the aircraft above the surface at B are: (Barometric lapse rate: 27 ft/hPa)

(For this question use annex 050-020). 

To which aerodrome is the following TAF most applicable ?

 TAF 230900Z 2310/2319 24014KT 6000 SCT030 BKN100 TEMPO 2311/2313 25020G38KT 2500 +TSRA SCT008 BKN025CB BECMG 2313/2315 28012KT 9999 SCT025 TEMPO 2315/2317 4000 SHRA BKN020 BECMG 2317/2319 9999 SCT030=

Ascension of air is promoted by..

Refer to figure.

Refer to figure.

An aircraft is planned to fly from Nairobi (N', approximately 1°S, 37ºE) to Manila ('M', approximately 15°N,121°E).

Assuming the track follows the straight line depicted on the chart, and the cruising FL increases from initially FL370 to

FL490 halfway through the flight, where along the route is it most likely to encounter a high concentration of hazardous

ice crystals?

Refer to figure.

Refer to figure.