__ , a German meteorologist and geophysicist, was the first to advance the idea of mobile continents in 1912 Marie Curie Albert Einstein Sigmond Freud Alfred Wegener

## Step 1<br />The question is asking for the name of the German meteorologist and geophysicist who first proposed the idea of mobile continents in 1912. The options provided are Marie Curie, Albert Einstein, Sigmond Freud, and Alfred Wegener.<br />## Step 2<br />Marie Curie was a physicist and chemist known for her research on radioactivity. She is not known for proposing the idea of mobile continents.<br />## Step 3<br />Albert Einstein was a theoretical physicist known for his theory of relativity. He is not known for proposing the idea of mobile continents.<br />## Step 4<br />Sigmond Freud was a neurologist and the founder of psychoanalysis. He is not known for proposing the idea of mobile continents.<br />## Step 5<br />Alfred Wegener was a German meteorologist and geophysicist who is known for his theory of continental drift, which proposed that continents were once joined together and have since drifted apart. This theory is the precursor to the modern theory of plate tectonics.