A.

wide temperature range

b.

two seasons

c.

droughts and fires

d.

wet and dry seasons
which of the following is characteristic of grasslands, but not savannas?

The answer is a wide temperature range, a savannah is a type of grassland. Savannahs have a very long dry winter and a very long wet summer, drought and fires afflict both in the same manner.

a.  wide temperature range

Grasslands are biomes which are dominated by grasses as vegetation. The temperature range in grasslands vary from summers to winters. The rain fall received by the grassland is also not appropriate to support the growth of large trees. The temperature range of the grassland is wider than savanna which  exhibit hot and dry climatic conditions.

the answer would be a

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.