Which are primary sources? Select three options. 1. military service record
2. textbook written by a historian
3. letter written by a solider on the front line
4. documentary about the lives of the soldiers on the front line
5. recording of an interview with a veteran who fought in a war

The answer is most likely 1,3,4 and if 1 isn't right it would be 3,4,5.

Explanation:

A,C,E

Explanation:

1. is correct because a military record records almost everthing that happens

2. is wrong because we dont know how proffesional the historian is

3. is right because this is a primary source

4. i wrong because it is secondary and not credible

5. is correct because you are getting first-hand information on what happened.

c-flooding of the area and the development of wetlands.

tell me if im wrong.

the vibration from the sound waves messed with the glass and it shattered.

hope this .