Answer:

Explanation:
The statements are logically equivalent if they have the same truth tables. So let´s use truth tables in order to determine if they are logically equivalent or not:
The picture that I attached you shows the truth table for each case. As you can see in the highlight columns:

They are logically equivalent because they have exactly the same truth values between each other. Hence, we can conclude that they are logically equivalent.
I say b because if you use a camera strap then you won't drop the camera on the hard ground.
Answer:
increased productivity
Explanation:
sorry if i am not correct
Answer:
Number 1 would be the answer and most safest one to choose.
One answer could be a GUI = Graphical User Interface (e.g. Windows Explorer).