Correct Answer  Option 2 : 10
^{4} cm
The correct answer is option 2) i.e. 104 cm.
CONCEPT:

Metric prefix: A metric prefix is a unit prefix placed before a basic unit of measurement. It represents the multiple of the unit in a convenient way.
A few common metric prefixes used are as below:
Metric Prefix 
Symbol 
Value 
peta 
P 
10^{15}

tera 
T 
1012

giga 
G 
10^{9}

mega 
M 
10^{6}

kilo 
k 
10^{3}

hecto 
h 
10^{2}

deka 
da 
10^{1}

deci 
d 
10^{1}

centi 
c 
10^{2}

milli 
m 
10^{3}

micro 
μ 
10^{6}

nano 
n 
10^{9}

Angstrom 
Å 
10^{10}

pico 
p 
10^{12}

EXPLANATION:
One micron length = 1 micrometre = 1 μm = 1 × 10^{6} m
We know,
1 m → 100 cm
∴ 1 × 10^{6} m → \(\frac{100\: cm}{1\:m}\) × 10^{6} m = 10^{4} cm