He started to observe, reconnoiter means to make a military observation of something so he throughly examined the corridors.
D because all the others are much more formal but with D it’s contrasted.
Hope this helped :)
What were the Ellis Island workers looking for in the immigrants' hair?
Answer: Option D.
<u>Explanation:</u>
The story "Ellis Island Oral History Project" is story which talks about events in the years 1890s to 1950s and it is about about the dedication of first hand recollections of immigrants who passed through the Ellis Island immigration station between 1892 and 1954.
Even after many years this project has increased about the passing of the immigrants from the stations which were formed at the Ellis island.
