Answer:
See Explanation
Step-by-step explanation:
Required
Determine positive and negative rational numbers
As a point of reference, we have the following
--- (1)
--- (2)
--- (3)
--- (4)
(a): 
See (1) above;
So, we have:
Hence, this is positive
(b):
See (3) above;
So, we have:

Hence, this is negative
(c): 
See (4) above;
So, we have:

<em>Hence, this is positive</em>
(d): 
See (2) above;
So, we have:

<em>Hence, this is negative.</em>
(e):
See (3) above;
So, we have:

<em>Hence, this is negative</em>
(f): 
See (4) above;
So, we have:

<em>Hence, this is positive</em>
(g): 
See (1) above;
So, we have:
Hence, this is positive
(h): 
See (2) above;
So, we have:

<em>Hence, this is negative.</em>