Incomplete question. Here's the remaining part of the question.
a. <sig> <pubKey>
b. <password>
c. <sig> <password>
d. <pubKey> <password>
Answer:
a
Step-by-step 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).