The correct answer is option (C):
Beads
The question asks us to find a word that has the same relationship with "String" as "Mountains" has with "Range".
Let's analyze the relationship between "Range" and "Mountains". A range is a series or sequence of mountains. In other words, mountains are arranged in a range.
Now let's consider the options and how they relate to "String". We need to find a word where the items are arranged in a string, or a string is a collection of these items.
* Ribbons: While ribbons can be long and tied, a "string of ribbons" isn't a standard or common phrase that represents a collection of individual ribbons in a sequence.
* Toys: A "string of toys" is not a typical or widely recognized grouping.
* Beads: Beads are individual items that are often strung together to form a necklace, bracelet, or garland. A "string of beads" is a very common and direct description of beads being connected in a linear fashion, much like mountains form a range.
* Keys: Keys can be put on a keyring, but a "string of keys" is not a common concept.
* Leaves: Leaves on a stem can be seen as being arranged in a sequence, but "string of leaves" isn't as precise a descriptor as "string of beads" for a collection of distinct, separable items linked together.
The word "Beads" best fits the analogy because, just as a range is a collection of mountains, a string is a collection of beads when they are arranged in a linear sequence. The word "string" is used in its common secondary meaning here, referring to a thread or cord on which beads are threaded.