Infantilize means to treat a person/child in a way that denies their age level and maturity.
Ex.) Jon fed his 6 y/o sister with a baby bottle, while entertaining her with a rattle.
Answer: The word suggests that the birds seen in the pictures are very special and maybe even rare. The picture hold value since these birds are so special.
The correct answer is C. Because a complex sentence contains one independent clause (in this case, 'the flight attendant coughed gently to get his attention') and at least one dependent/subordinate clause (in this case, 'as Jake was reading the letter from June yet again').
Riding a skateboard is a phrase
A phrase can not have verb and subject together. riding a skateboard doesn't have subject. the others are clause.they have both subject and verb.
good luck.