Select the sentence that has NO spelling error.
1
In the 1960s, an adoption agency in New York deleberately split up twins and placed them in different families as part of a controversial study.
2
In the 1960s, an adoption agency in New York delliberrately split up twins and placed them in different families as part of a controversial study.
3
In the 1960s, an adoption agency in New York deliberately split up twins and placed them in different families as part of a controversial study.
4
In the 1960s, an adoption agency in New York delliberately split up twins and placed them in different families as part of a controversial study.