Which of the following is the correct syntax to unsubscribe from a subscription stored in a variable named sub?

easy📝 Syntax Q3 of 15

Angular - RxJS and Observables Fundamentals

Which of the following is the correct syntax to unsubscribe from a subscription stored in a variable named sub?

Aunsubscribe(sub);

Bsub.stop();

Csub.unsubscribe();

Dsub.close();

Step-by-Step Solution

Solution:

Step 1: Recall Subscription API
Angular subscriptions have an unsubscribe() method to stop listening.
Step 2: Match correct method call
Calling sub.unsubscribe() properly stops the subscription.
Final Answer:
sub.unsubscribe(); -> Option C
Quick Check:
Correct unsubscribe syntax = B [OK]

Quick Trick: Call unsubscribe() on subscription variable to stop it [OK]

Common Mistakes:

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