The Jyutping romanization listed for the Cantonese words dim sum is dim2 sam1.
Jyutping is a Cantonese romanization system that uses numbers to mark lexical tones. In this spelling, “dim” represents the first Cantonese syllable and “sam” the second; the numerals 2 and 1 record their tones. The form corresponds to the Cantonese pronunciation of 點心, the Chinese term written in traditional characters.
Dim sum is commonly associated with Cantonese cuisine and with yum cha, the tea-centered brunch tradition. The phrase is often translated as “touch the heart,” although the historical origin and exact development of the term are more complicated than that popular gloss suggests.
The romanization is not the same as Mandarin pinyin. Mandarin commonly gives 點心 as diǎnxīn, while Cantonese systems preserve the Cantonese pronunciation. The answer choices siu1 maai2 and haa1 gaau2 are romanizations for other familiar dim sum items, and jam2 caa4 refers to drinking tea.