Question

Fill in the blanks with suitable prepositions:
Many studies have shown less heart disease __________ groups ________ low blood cholesterol.

• A. Between / of
• B. Among / with
• C. In / of
• D. Within / at

Answer 1

The correct option is B Among / with

The given sentence talks about groups.

'Between' is used to indicate a separation of two things whereas 'among' is used to show happenings in groups of things or people. Since the given sentence talks about groups,'among' is the appropriate preposition.

We can thus eliminate A,C,D as incorrect answers.

With is used to indicate means, possession, contents, relationship, for and against. The second part of the given sentence indicates possession.

Thus option B is the correct answer.