Incomplete question. Here's the remaining part of the question.
a. <sig> <pubKey>
b. <password>
c. <sig> <password>
d. <pubKey> <password>
Answer:
<u>a</u>
Explanation:
Remember, Bitcoin also has its script code which is called ScriptPubkey.
To redeem a transaction implies using the script
<sig> <pubKey>
for the receiving Bitcoin address.
Put simply, the purpose of this script is to lock (redeem) the transaction using the public key (bitcoin address).
-4
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Answer:
Clara should use computer lenses and artifical tears.
The computer lenses help block blue light from entering your eyes which would help with the headaches and help you focus on something further away. The artificial tears help lubricate dry eyes which prevents or in Clara's case, reduces/relieves eye strain.