Question

Local time is now 8 in the morning.

I have as yet no information concerning the actual landings nor our progress through beach obstacles. Communique will not be issued until we have word that leading ground troops are actually ashore.

All preliminary reports are satisfactory. Airborne formations apparently landed in good order with losses out of approximately 1250 airplanes participating about 30. Preliminary bombings by air went off as scheduled. Navy reports sweeping some mines, but so far as is known channels are clear and operation proceeding as planned. In early morning hours reaction from shore batteries was sufficiently light that some of the naval spotting planes have returned awaiting call.

The weather yesterday which was original date selected was impossible all along the target coast. Today conditions are vastly improved both by sea and air and we have the prospect of at least reasonably favorable weather for the next few days.

–Excerpt from D-Day message from General Eisenhower to General Marshall
On the morning of June 6, 1944, General Eisenhower sent a message to US Army Chief of Staff George Marshall about the progress of the invasion.

Based on this passage, what factors did planners have to consider before the invasion of Normandy?

mines

shore batteries

weather

mountainous terrain
Local time is now 8 in the morning.

I have as yet no information concerning the actual landings nor our progress through beach obstacles. Communique will not be issued until we have word that leading ground troops are actually ashore.

All preliminary reports are satisfactory. Airborne formations apparently landed in good order with losses out of approximately 1250 airplanes participating about 30. Preliminary bombings by air went off as scheduled. Navy reports sweeping some

Answer 1

Select: mines, shore batteries, weather.

Reason: the message mentions navy "sweeping some mines," enemy "shore batteries," and weather conditions affecting the operation. It does not mention mountainous terrain.