Explanation:

- The Indian Science Congress is an annual event that gathers scientists from across India to discuss various scientific advancements.

- Option 1: Shimoga is a city in the state of Karnataka but not known for being a frequent host for large national science events.

- Option 2: Imphal, although a growing education hub, hasn't been chosen for hosting the event in 2020.

- Option 3: Raipur is the capital of Chhattisgarh and not a host for this particular Congress in 2020.

- Option 4: Bengaluru is known for being a major center for science and technology and was indeed the host city for the 107th Indian Science Congress in January 2020.

- Option 5: Jabalpur is more known for its institutions, but not chosen as the host for this event in 2020.