Across cultures, facial expressions and gestures:

A) are similar, but people from one culture cannot interpret expressions from another culture.
B) are the same, because they are entirely controlled by genetics.
C) are similar in westernized cultures, but totally different in non-Western cultures, such as Japan.
D) are similar, but the frequencies with which they are used differ.

Research has shown that facial expressions and gestures are similar across cultures, but the frequencies with which they are used can differ. For example, some cultures may use certain hand gestures more frequently than others, but the meaning behind those gestures remains the same. Similarly, facial expressions such as smiling, frowning, and raising eyebrows are universally recognized, but the degree to which they are used can vary.