Correct

群岛

/ qúndǎo / 
Strokes

Definition

group of islands/archipelago

Example

As a Noun

archipelago; group of islands

1
Nánshāqúndǎo
南沙群岛

Nansha Islands

2
Qúndǎo
群岛
shuǐyù
水域

archipelagic waters

3
Qúndǎo
群岛
jīxiàn
基线

archipelago base line

4
Qúndǎo
群岛
hǎiyù
海域

archipelagic sea