In the following passage some words have been deleted. Fill in the blanks with the help of the alternatives given. Select the most appropriate option for each blank.
The Matryoshka doll is also called the Russian nesting doll. It is a set (1)______ wooden dolls decreasing in size and (2)______ inside one another. The first such set (3)______ in 1890. The figures inside may be of (4)______ gender. The smallest doll is the baby, made from (5)______ single piece of wood
Select the most appropriate option to fill in blank number (1)