How does understanding the characteristics of public speaking affect how you view a speech?
a. it you understand the purpose of the speech,
b. it teaches you about who the speaker is,
c. it you determine how effective the speech is,
d.
it allows you to take better notes on the speech,
e
it you become more like the speaker,

Option (C)

It helps you determine how effective the speech is;

Explanation:

The purpose of public speaking is be to convey information, tell a story, inspire people to act or encourage people. Public Speaking ensures the effectiveness of a speech. Intentionally, this style of speech is organized with three general purposes: to educate, convince and entertain.

Understanding when it is most successful in public speaking and how it is done perfectly is key to understanding its significance.

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.