We saw AN otter.
You use ‘an’ when the next word starts with a vowel.
For example:
With vowel - There was AN eagle.
Not a vowel - There was A bird.
Similarly, adolescents who report that they have a good relationship with at least one parent are more likely to report good physical and mental health. Family arguments during adolescence are to be expected, and may even serve an important developmental purpose.
I am pretty sure that the anser is at least one of the textbooks are free from errors.
Answer:
to physically control the movements of a person or animal The passenger had to be restrained by four members of the cabin crew. Synonyms and related words Definition and synonyms of restrain from the online English dictionary from Macmillan Education.
Explanation: