The speed of sound through alr is fastest when the air temperature is A. 40 °C
B.60 °C
C. 0 °C
D. 20 °C

as a general rule, scissors have blades less than 6 in (15 cm) long and usually have handles with finger holes of the same size. shears have blades scissors used to cut hair or fabric must be much sharper.

a, c, d, e are all applying about success strategies.