what does the word broad-shouldered mean in this sentence. All those years of having enough to eat and hauling bread trays around have made him broad-shouldered

It means he is big. Not obese, just a big person.

Explanation:

1. “very gifted” and “who would succeed”

Explanation:

Albert Schweitzer (1875 – 1965) was a French polymath. He was a citizen of German Empire by birth and later became a French citizen after World War I as his native town Alsac had become part of France. He was a theologian, organist, writer, humanitarian, philosopher, and physician. He received Nobel Peace Prize in 1952 for his philosophy of "Reverence for Life"

Option 1 is correct as it says "very gifted", which means he had gifted talent and "who would succeed in any career" also shows that he had many diverse interests and talent.

Option 2 is not correct because just "thinking of success" has no indication of any talent, "feelings of gratitude" shows humility not talent.

Option 3 is not correct because "develop the idea" is not necessarily related with talent, and "good fortune" too is ambiguous when talking about someone's talent.

Option 4 is not correct because “his own interests” and “serve the world” have no indication of talent.