Question

which is the best way to complete the text?
people who are lactose intolerant can obtain calcium from the following non - dairy _____________, salmon, baked beans, and almonds.
sources. collards
sources, collards
sources: collards

Explanation:

A colon (:) is used to introduce a list. In this case, "collards, salmon, baked beans, and almonds" is a list of non - dairy sources of calcium. The word "sources" is general, and the colon properly signals the start of the specific list. A period (.) after "sources" would end the sentence prematurely before the list. A comma (,) after "sources" is incorrect as it does not have the function of introducing a list like a colon does.

Answer:

sources: collards