At one pointthe interview, they asked about my previous jobs and I didn't know what to say. (a) While
(b) During
(c) Meanwhile
(d) Throughout

Explanation:

At one point (during) the interview, they asked about my previous jobs and I didn't know what to say.

During is typically used before nouns or noun phrases in order to indicate that an event took place over a particular period of time.

Here, the speaker is explaining how he or she didn't know what to say during an interview.

the choice that is not a technique that you should use to come up with ideas for the topic of a research project is, writing about academic subjects that are not interesting to you. this does not belong to the techniques to come up with ideas because having no interest in a certain topic will lose your drive to come up with better ideas. it gives no room for improvement and acquiring of new ideas and information. 

explanation:

the mood is annoyed. they wish sandy was there do to the job right and since they dont like they way it came out now they are annoyed.