Bash: pass variable as a single parameter / shell quote parameter

Question

I\'m writing a bash script which has to pass a variable to another program:

./program $variable

The problem is, it is absolutely necessary for

Answer 1

The problem seems to be inside the "program"

variable="Hello World"    # quotes are needed because of the space
./program "$variable"     # here quotes again

and inside the program

echo "program received $# arguments:" 
i=1
for arg in "$@"      # again quotes needed
do echo "arg $((i=i+1)): '$arg'"    # and again
done