Seventy year old Barbara has been asked to memorize a series of thirty words. She is likely to perform similar to that of young adults if she is asked to recognize the words rather than them.

The correct answer is - recall.

Explanation:

Retrieving the memory of the particular series of words or the incident can be done by two main types of memory retrieval techniques - recall or recognition method.

The recall is the method that includes the retrieving information from the memories while the recognition is the process that involves recognizing the information or the word by a presentation of a familiar cue that is experienced or seen before that help in retrieving.

It is shown in the study that the recognition involves in retrieving is more helpful than the recalling even in the older person.

Thus, the correct answer is - recall.