Question

Will Medal And Fan!

Agricola puellam amat.

Meaning: The farmer loves the girl.

1. What Latin ending in the sentence above represents the SUBJECT?

Answer 1

First decide which word is the subject, object and verb.
"Agricola" is a farmer (in nominative case, i.e. subject)
"Puellam" is a girl (in accusative case, i.e. object)
"amat" is indicative present, third person.
The reason we need to know the endings is because a sentence in Latin could be written in almost any order, and still will not be confusing.

For more information on endings, check:
http://www.dummies.com/how-to/content/declining-a-latin-noun.html