Read the sentence and answer the question.
The archaeologist, who studied a group of animals in the Amazon jungle, described the feeding habits of a primates there.
The sentence has an error with article usage. Which sentence corrects that error?
1 The archaeologist, who studies a group of animals in the Amazon jungle, described the feeding habits of a primates there.
2 The archaeologist, who studied a group of animals in the Amazon jungle, described the feeding habits of the primates there.
3 The archaeologist, who studied a group of animals in the Amazon jungle, described the feeder habits of a primates there.
4 The archaeologist, who studied a group of animals in the Amazon jungle, describ the feeding habits of a primates there.
5 The archaeologist, who studied a groups of animals in the Amazon jungle, described the feeding habits of a primates there.