Based on the given sentence above, the number of independent and subordinate clauses would be one subordinate clause only. The given group of words above only consists of a subordinate clause and does not convey a complete thought, even though the clause still have a subject and a verb. Hope this answer helps.
near the river= to plant easily
a cave= to have a better shelter
C, I think. A looks good, but B is missing a comma.
Answer: Summary below
Explanation:George Steinhauser made an important discovery about bellybutton lint. He was curious and wanted answers, so he began studying his own bellybutton lint. He discovered that the naval lint contains cotton from clothing, as well as dead skin, sweat, dust, and fat. His research also helped explain how lint accumulates. As it turned out, the hair on the human stomach acts as small hooks that capture and hold contents within. You may shave your stomach, but the hairs act as a natural way to protect your bellybutton from germs and unwanted objects.
It is defining.
Defining relative clause does not have a comma, while a non-defining relative clause has.
For example, if the sentence is:
The children, who hate chocolates, are uncommon.
- since there is comma in this sentence, it is non-defining.
- while if there is no comma like the question in the picture, it is defining.