Rearrange the parts of the sentence in correct order.

Ensuring security

P-harder than hacking into a system

Q-of data, information, and

R-communication is considerably

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".
You must (be mistake).

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".
What would you like (to do it) for your birthday?

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.
Let something slip through one's fingers

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.
Gnash your teeth

In the following question, out of the four alternatives, select the word opposite in meaning to the word given.
Salve

In the following question, out of the four alternatives, select the word opposite in meaning to the word given.
Differ

In the following question, out of the four alternatives, select the word similar in meaning to the word given.
Depict

In the following question, out of the four alternatives, select the word similar in meaning to the word given.
Fossilize