【单选题】

Experts suggest using a different password for every website you visit, and changing the password every few months. It takes trouble to keep them in mind, but it’s well worth the (56) .Be (57) with your passwords and make it difficult for someone to enter your (58) . The more (59) you make your password, the more difficult it is for someone else to figure it (60) .

Use privacy settings (设置) on social websites to (61) entry into your personal information and limit the (62) of private information you share.Even seemingly innocent information you expose about yourself could be used (63) you. I once read about a burglary (入室盗窃). It (64) that the thieves selected that particular home (65) they discovered the owner was out of town by (66) a Facebook message.
According to personal safety experts, it isn’t a(n) (67) experience. The information you post on websites can (68) criminal activity. You may not think (69) about posting the concert you are going to or your weekend away, but could be a(n) (70) for trouble.
Information on the Internet has made it easier for thieves to steal any information about you. Never (71) your full birth date. Never respond to e-mails (72) personal or financial information.Do not freely offer personal information to anyone (73) you are certain who you are dealing with. (74) the necessary precautions (预防措施) is the best way to (75) you and your personal information stay protecteD、
A．effect
B．effort
C．labor
D．matter