I phoned him because he was not home.
The second part of the sentence is now dependent on the first as it cannot stand alone as its own sentence.
Answer: guess from context
Explanation:
Rangi, the Sky Father, held his beloved, Papa, and together they bore many sons who were not human, but rather elements of nature. These sons loved their parents, but Rangi and Papa's embrace was so tight that they had no space to move or to lead their lives. They lay in the darkness, constricted and unhappy.
Adverb would be the correct answer
+
D, as 'Gerunds' is a verb and normally ends with ing in the present tense :)